The Biological Bases of Behavior€¦ · Controls fight or flight function ... nigra, pituitary...
Transcript of The Biological Bases of Behavior€¦ · Controls fight or flight function ... nigra, pituitary...
Copyright copy Houghton Mifflin Company All rights reserved 3ndash1
Chapter 3
The Biological Bases of
Behavior
Copyright copy Houghton Mifflin Company All rights reserved 3ndash2
Biological Psychology
bull The study of the cells and organs of the
body and the physical and chemical
changes involved in behavior and
mental processes
bull What is the relationship between onersquos
body and onersquos mind
Copyright copy Houghton Mifflin Company All rights reserved 3ndash3
The Complex Relationship
Between Our Brain and Our Behavior
Biological
ProcessesEnvironment
Figure 31
Three Functions of the Nervous System
Copyright copy Houghton Mifflin Company All rights reserved 3ndash5
Cells of the Nervous System
bull Neurons Specialized cells that rapidly
respond to signals and quickly send
signals of their own
bull Glial cells Cells that help hold neurons
together and help neurons
communicate with one another
Copyright copy Houghton Mifflin Company All rights reserved 3ndash6
Figure 32 The Neuron
2) What Cells Make Up the Nervous
Systembull Cell Body- contains nucleus
which provides energy for the
neuron (C)
bull Dendrites- receive messages
from other neurons (B)
bull Axon- carry information away
from the cell body (D)
bull Axon Terminals- transmit signals
to the dendrites (E)
bull Myelin Sheath- A substance that
speeds up the firing of the neuron
(F)
bull Nodes of Ranvier- Name for the
small gaps on the neuron that
have no myelin covering (A)
Copyright copy Houghton Mifflin Company All rights reserved 3ndash8
Axon
bull Function Carries signals way from the
cell body
bull Type of Signal Carried The action
potential an all-or-nothing
electrochemical signal that shoots down
the axon to vesicles at the tip of the
axon releasing neurotransmitters
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash2
Biological Psychology
bull The study of the cells and organs of the
body and the physical and chemical
changes involved in behavior and
mental processes
bull What is the relationship between onersquos
body and onersquos mind
Copyright copy Houghton Mifflin Company All rights reserved 3ndash3
The Complex Relationship
Between Our Brain and Our Behavior
Biological
ProcessesEnvironment
Figure 31
Three Functions of the Nervous System
Copyright copy Houghton Mifflin Company All rights reserved 3ndash5
Cells of the Nervous System
bull Neurons Specialized cells that rapidly
respond to signals and quickly send
signals of their own
bull Glial cells Cells that help hold neurons
together and help neurons
communicate with one another
Copyright copy Houghton Mifflin Company All rights reserved 3ndash6
Figure 32 The Neuron
2) What Cells Make Up the Nervous
Systembull Cell Body- contains nucleus
which provides energy for the
neuron (C)
bull Dendrites- receive messages
from other neurons (B)
bull Axon- carry information away
from the cell body (D)
bull Axon Terminals- transmit signals
to the dendrites (E)
bull Myelin Sheath- A substance that
speeds up the firing of the neuron
(F)
bull Nodes of Ranvier- Name for the
small gaps on the neuron that
have no myelin covering (A)
Copyright copy Houghton Mifflin Company All rights reserved 3ndash8
Axon
bull Function Carries signals way from the
cell body
bull Type of Signal Carried The action
potential an all-or-nothing
electrochemical signal that shoots down
the axon to vesicles at the tip of the
axon releasing neurotransmitters
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash3
The Complex Relationship
Between Our Brain and Our Behavior
Biological
ProcessesEnvironment
Figure 31
Three Functions of the Nervous System
Copyright copy Houghton Mifflin Company All rights reserved 3ndash5
Cells of the Nervous System
bull Neurons Specialized cells that rapidly
respond to signals and quickly send
signals of their own
bull Glial cells Cells that help hold neurons
together and help neurons
communicate with one another
Copyright copy Houghton Mifflin Company All rights reserved 3ndash6
Figure 32 The Neuron
2) What Cells Make Up the Nervous
Systembull Cell Body- contains nucleus
which provides energy for the
neuron (C)
bull Dendrites- receive messages
from other neurons (B)
bull Axon- carry information away
from the cell body (D)
bull Axon Terminals- transmit signals
to the dendrites (E)
bull Myelin Sheath- A substance that
speeds up the firing of the neuron
(F)
bull Nodes of Ranvier- Name for the
small gaps on the neuron that
have no myelin covering (A)
Copyright copy Houghton Mifflin Company All rights reserved 3ndash8
Axon
bull Function Carries signals way from the
cell body
bull Type of Signal Carried The action
potential an all-or-nothing
electrochemical signal that shoots down
the axon to vesicles at the tip of the
axon releasing neurotransmitters
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Figure 31
Three Functions of the Nervous System
Copyright copy Houghton Mifflin Company All rights reserved 3ndash5
Cells of the Nervous System
bull Neurons Specialized cells that rapidly
respond to signals and quickly send
signals of their own
bull Glial cells Cells that help hold neurons
together and help neurons
communicate with one another
Copyright copy Houghton Mifflin Company All rights reserved 3ndash6
Figure 32 The Neuron
2) What Cells Make Up the Nervous
Systembull Cell Body- contains nucleus
which provides energy for the
neuron (C)
bull Dendrites- receive messages
from other neurons (B)
bull Axon- carry information away
from the cell body (D)
bull Axon Terminals- transmit signals
to the dendrites (E)
bull Myelin Sheath- A substance that
speeds up the firing of the neuron
(F)
bull Nodes of Ranvier- Name for the
small gaps on the neuron that
have no myelin covering (A)
Copyright copy Houghton Mifflin Company All rights reserved 3ndash8
Axon
bull Function Carries signals way from the
cell body
bull Type of Signal Carried The action
potential an all-or-nothing
electrochemical signal that shoots down
the axon to vesicles at the tip of the
axon releasing neurotransmitters
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash5
Cells of the Nervous System
bull Neurons Specialized cells that rapidly
respond to signals and quickly send
signals of their own
bull Glial cells Cells that help hold neurons
together and help neurons
communicate with one another
Copyright copy Houghton Mifflin Company All rights reserved 3ndash6
Figure 32 The Neuron
2) What Cells Make Up the Nervous
Systembull Cell Body- contains nucleus
which provides energy for the
neuron (C)
bull Dendrites- receive messages
from other neurons (B)
bull Axon- carry information away
from the cell body (D)
bull Axon Terminals- transmit signals
to the dendrites (E)
bull Myelin Sheath- A substance that
speeds up the firing of the neuron
(F)
bull Nodes of Ranvier- Name for the
small gaps on the neuron that
have no myelin covering (A)
Copyright copy Houghton Mifflin Company All rights reserved 3ndash8
Axon
bull Function Carries signals way from the
cell body
bull Type of Signal Carried The action
potential an all-or-nothing
electrochemical signal that shoots down
the axon to vesicles at the tip of the
axon releasing neurotransmitters
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash6
Figure 32 The Neuron
2) What Cells Make Up the Nervous
Systembull Cell Body- contains nucleus
which provides energy for the
neuron (C)
bull Dendrites- receive messages
from other neurons (B)
bull Axon- carry information away
from the cell body (D)
bull Axon Terminals- transmit signals
to the dendrites (E)
bull Myelin Sheath- A substance that
speeds up the firing of the neuron
(F)
bull Nodes of Ranvier- Name for the
small gaps on the neuron that
have no myelin covering (A)
Copyright copy Houghton Mifflin Company All rights reserved 3ndash8
Axon
bull Function Carries signals way from the
cell body
bull Type of Signal Carried The action
potential an all-or-nothing
electrochemical signal that shoots down
the axon to vesicles at the tip of the
axon releasing neurotransmitters
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
2) What Cells Make Up the Nervous
Systembull Cell Body- contains nucleus
which provides energy for the
neuron (C)
bull Dendrites- receive messages
from other neurons (B)
bull Axon- carry information away
from the cell body (D)
bull Axon Terminals- transmit signals
to the dendrites (E)
bull Myelin Sheath- A substance that
speeds up the firing of the neuron
(F)
bull Nodes of Ranvier- Name for the
small gaps on the neuron that
have no myelin covering (A)
Copyright copy Houghton Mifflin Company All rights reserved 3ndash8
Axon
bull Function Carries signals way from the
cell body
bull Type of Signal Carried The action
potential an all-or-nothing
electrochemical signal that shoots down
the axon to vesicles at the tip of the
axon releasing neurotransmitters
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash8
Axon
bull Function Carries signals way from the
cell body
bull Type of Signal Carried The action
potential an all-or-nothing
electrochemical signal that shoots down
the axon to vesicles at the tip of the
axon releasing neurotransmitters
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash9
Dendrite
bull Function Detects and carries signals
to the cell body
bull Type of Signal Carried The
postsynaptic potential which is an
electrochemical signal moving toward
the cell body
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash10
Synapse
bull Function Provides an area for the
transfer of signals between neurons
usually between axon and dendrite
bull Type of Signal Carried Chemicals that
cross the synapse and reach receptors
on another cell
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Neural transmission
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson2_
neurotransmissionhtm
bull httpscienceeducationnihgovsupple
mentsnih2addictionactivitieslesson3_
cocainehtm
Copyright copy Houghton Mifflin Company All rights reserved 3ndash11
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash12
Receptors
bull Function Proteins on the cell
membrane that receive chemical signals
bull Type of Signal Carried Recognizes
certain neurotransmitters thus allowing
it to begin a postsynaptic potential in
the dendrite
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash13
Neurotransmitter
bull Function A chemical released by one
cell that binds to the receptors on
another cell
bull Type of Signal Carried A chemical
message telling the next cell to fire or
not to fire its own action potential
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Communication Between
Neuronsbull An action potential triggers the release of neuotransmitters
ndash Neurotransmitters are chemicals that help neighboring neurons talk to each other
ndash These chemicals float from the synaptic vessel of one neuron and are taken up by the Neurotransmitter receptors in neighboring neuron
ndash Synapse - small space between neurons
bull Plasticity - repeated release of neurotransmitters can cause permanent change to the neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash15
The Action Potential
bull Stimulation causes cell membrane to
open briefly
bull Positively charged sodium ions flow in
bull Very brief shift in electrical charge that
travels along axon
bull Action potential-which is a short-
lived change in electric charge inside
the neuron
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
All or none ldquolawrdquo
bull neuron either fires and generates an
action potential or doesnrsquot
bull Stronger stimuli do not send stronger
impulses-gt send impulses at a faster
rate--- OR involve more neurons
bull
Copyright copy Houghton Mifflin Company All rights reserved 3ndash16
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash17
Figure 35
Communication
Between
Neurons
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash18
Figure 33
The Beginning of an Action Potential
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash19
Impulse
Presynaptic neuron
Vesicle
Transmitters
Synaptic cleft
Receptors
Postsynaptic
neuron
Postsynaptic activity
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash20
Termination of Neurosynaptic
Transmission
bull Reuptake
bull Enzymatic degradation
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash21
Small Molecule Neurotransmitters
Neurotransmitter Normal Function
Disorder Associated with Malfunctioning
Acetycholine Movement memory
Alzheimerrsquos disease
Norepinephrine Sleep learning mood
Depression
Serotonin Mood appetite aggression
Depression
Dopamine Movement reward
Parkinsonrsquos disease schizophrenia
GABA Movement Huntingtonrsquos disease epilepsy
Glutamate Memory Neuron loss after stroke
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash22
Agonists and Antagonists
bull Agonist ndash mimics neurotransmitter
action
bull Antagonist ndash opposes action of a
neurotransmitter
bull 9 that have been carefully studied
bull Letrsquos talk about a few on the next slide
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Alcohol example
bull Alcohol increases the activity of
gamma-aminobutyric acid (GABA) a
major inhibitory neurotransmitter
bull Alcohol decreases the activity of
glutamate major excitatory
neurotransmitter
bull = substantial reduction in neural firing
within the brain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash23
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
4) How Is the Nervous System
Organized
1) Central Nervous System ndash Neurons in the
brain and spinal cord
2) Peripheral Nervous System ndash Neurons in
the rest of the body
a) Somatic Nervous System- all the
neurons that take in sensory information
(touch and pain) from the body and
deliver it to the spinal cord and brain
b) Autonomic Nervous System
i Sympathtic Nervous System-
Controls fight or flight function
ii Parasympathetic Nervous System-
Controls digestive and other
organ function
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash25
Somatic Nervous System
bull Sends sensory information to central
nervous system for processing
bull Sends messages from central nervous
system to muscles to direct motion
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash26
Autonomic Nervous System
bull Controls activities that are generally
autonomous or independent of onersquos control
bull Two subsystems
ndash Sympathetic Nervous System Mobilizes the
body for action in face of stress
bull ldquoFight or flightrdquo response
ndash Parasympathetic Nervous System Regulates
the bodyrsquos functions to conserve energy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash27
httpfacultywashingtoneduchudler
autohtml
bull Parasympathetic
bull Involved in states of
calm
bull Sympathetic
bull Involved in states of
Arousal
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash28
Figure 35 Organization of the human nervous system This overview of the human nervous system shows the relationships
of its various parts and systems The brain is traditionally divided into three regions the hindbrain the midbrain and the
forebrain The reticular formation runs through both the midbrain and the hindbrain on its way up and down the brainstem
These and other parts of the brain are discussed in detail later in the chapter The peripheral nervous system is made up of the
somatic nervous system which controls voluntary muscles and sensory receptors and the autonomic nervous system which
controls the involuntary activities of smooth muscles blood vessels and glands
Figure 35
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
5) Structures of the Brain
Brain Stem
Pons reticular formation
cerebellum
Midbrain
Thalamus hypothalamus
hippocampus substantia
nigra pituitary gland
Cerebral Cortex
Visual auditory motor
sensory
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Brainstem
bull Functionndash regulates basic life functions
bull Locationndash connects brain to the rest of the body via the spinal cord
bull Parts of Brainstemndash Reticular formation- regulates sleepwake cycle
bull Main source of the neurotransmitter Serotonin-important for mood and activity levels
ndash Pons-bull Main source of the neurotransmitter norepinephrine- important
for arousal and attention
ndash Medulla- regulates heartbeat breathing swallowing and coughing
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Cerebellum
bull Function
ndash Controls motor movement and balance
ndash Helpful in learning things that involve
movement (eg walking or skiing)
bull Location
ndash Sits at the back of the brain and is
connected to the brain stem
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash32
The Midbrain
bull Controls certain types of automatic behaviors
that integrate simple movements with sensory
input
bull Substantia nigra and the striatum are
involved in the smooth initiation
of movement
bull (Amygdala hippocampus hypothalamus -gt
also Limbic system
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Figure 314
Major Structures of the Forebrain
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash34
The Limbic System
Saul Kassin Psychology Copyright copy 1995 by Houghton Mifflin Company Reprinted by permission
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Neocortex
bull Location - Top wrinkly part
of the brain
bull Different Parts
ndash Frontal Lobe (front of brain) -
higher intellectual thinking
bull Brocarsquos area- speech production
bull Prefrontal cortex- working memory
morality mood
ndash Occipital Lobe (back of brain)-
vision
ndash Temporal Lobe (sides of brain)-
hearing language learning and
memory
bull Wenickersquos area- language
comprehension
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Neocortex Cont
ndash Parietal Lobe (top of brain)-
perception of touch
bull Somatosensory strip-
contains neurons that
register the sensation of
touch
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash37
Figure 318
The Brainrsquos
Left and Right
Hemispheres
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash38
Right BrainLeft Brain Cerebral Specialization
bull Each hemisphere specialized for
handling certain types of cognitive
tasks better than others
bull Left hemisphere ndash verbal processing
language speech reading writing
bull Right hemisphere ndash nonverbal
processing spatial musical visual
recognition
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash39
The Cerebrum Two Hemispheres Four Lobes
bull Cerebral Hemispheres ndash two specialized halves connected by the corpus collosum
bull Four Lobesndash Occipital ndash vision
ndash Parietal ndash somatosensory
ndash Temporal ndash auditory
ndash Frontal ndash movement executive control systems
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash40
Figure 314 The cerebral cortex in humans The cerebral cortex consists of right and left halves called cerebral
hemispheres This diagram provides a view of the right hemisphere Each cerebral hemisphere is divided into four
lobes (which are highlighted in the bottom inset) the occipital lobe the parietal lobe the temporal lobe and the
frontal lobe Each lobe has areas that handle particular functions such as visual processing The functions of the
prefrontal cortex are something of a mystery but they appear to include working memory and relational reasoning
Figure 314
Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
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Corpus Callosum
bull Function
ndash Communicates information
from one side of the brain to
the other
bull Location
ndash Connects the two brain
hemispheres
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
6) Building the Brain How We
Develop
bull During the 3rd week of
prenatal development
the outer layer of the
embryo (called the
ectoderm) folds in on
itself to form the
neural tube
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash43
Figure 315
Alzheimerrsquos
Disease
and Brain
Atrophy
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back
Copyright copy Houghton Mifflin Company All rights reserved 3ndash44
go back