First things first...

Unit 2: Biological LOA

Lab report submission

First things first...


Monday’s Journal Ethical considerations of animal research in

Psychology


Using one or more examples, explain effects of neurotransmission on human behaviour

Introduction to neurons and neurotransmitters

Today’s learning outcome


It is estimated that there are between __________ neurons in nervous system and neurons make ___________ connections with each other.

Neurons send ___________ to the brain so that people can respond to stimuli either from environment or from internal changes in body. This is called __________.

The parts of neurons that send messages are the ____________, and the parts of neurons that receive messages are the ______________.

When an electrical impulse travels down the axon of the neuron, it releases _________ which then cross the gap between two neurons.

The space between the dendrites of one neuron and the axon of another neuron is called the _________________.

In the year __________, a man named ___________ first discovered neurotransmitters during an experiment with frog hearts.

Neurotransmitters are the body’s natural _____________. They transmit information from one ___________ to another.

Once the message is passed on, neurotransmitters are either broken down or reabsorbed by terminal buttons. This is called _______.

Neurotransmitters shown to have a range of effects on ________ including ________ and ___________.


Nerve cells, called neurons= one of building blocks of behaviour

Estimated that there are between 10 and 100 billion neurons in nervous system and neurons make 13 trillion connections with each other

Neurons


Neurons send electrochemical messages to brain so people can respond to stimuli either from environment or from internal changes in body

The method by which these messages are sent is called NEUROTRANSMISSION

Neurons


In the year 1921, a man named Otto Loewi first discovered neurotransmitters during an experiment with two frog hearts.

He shared the Nobel Prize with researcher Henry Dale in 1936 for their findings on neurotransmission.

A brief history...

Dendrite –receives message Axon – sends message

Myelin sheath – insulates axon, speeding up transmission

*Dendrites detect, axons announce*


When an electrical impulse travels down the axon of the neuron, it releases neurotransmitters which then cross the gap between two neurons

This gap is called a synapse

Neurotransmission


Body’s natural chemical messengers

Transmits information from one neuron to another

Stored in the neurons’ terminal buttons

After crossing the synapse, neurotransmitters fit into receptor sites on the post-synaptic membrane, like a key in a lock

Once the message is passed on, neurotransmitters are either broken down or reabsorbed by terminal buttons. This is called reuptake.

So what IS a Neurotransmitter?


Information flow through neurons


Neurotransmission


Neurotransmitters shown to have a range of effects on human behaviour

Neurotransmission lies beneath behaviours as varied as mood, memory, sexual arousal and mental illness

Neurotransmitters and behaviour


Watch the video on Neurotransmitters

Take notes as you watch


Create and label your own diagram for the information flow through the neuron

This can either be a simple flow chart or an illustration of a neuron

Today’s Journal Entry


We will be looking at the effects of neurotransmission on behaviour

Next session

First things first...

Documents

Transcript of First things first...