Hemispheric Differences
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Transcript of Hemispheric Differences
Hemispheric Differences
Module 8: The Brain
Hemispheric Differences
• “Left-brained” and “right-brained” debunked
• Brain is divided into two hemispheres but works as a single entity.
• Both sides continually communicate via the corpus callosum, except in those with split brains.
Hemispheric Differences:
Language and Spatial Abilities
Module 8: The Brain
The Brain’s Left Hemisphere
• For most people, language functions are in the left hemisphere.
• For a small percentage of people, language functions are in the right hemisphere.
Broca’s Area
• Located in the frontal lobe and usually in the left hemisphere
• Responsible for the muscle movements of speech
• If damaged the person can form the ideas but cannot express them as speech (stroke victims)
PET Scan of Broca’s Area
Wernicke’s Area
• Located in the temporal lobe• Involved in language comprehension
and expression; our ability to understand what is said to us
• Usually in the left temporal lobe
PET Scan of Wernicke’s Area
The Brain’s Right Hemisphere
• Houses the brain’s spatial abilities• Our spatial ability allows us to perceive
or organize things in a given space, judge distance, etc.
• Helps in making connections between words
Brain Plasticity
Module 8: The Brain
Plasticity
• The ability of the brain tissue to take on new functions
• Greatest in childhood• Important if parts of the brain are
damaged or destroyed
hemispherectomy• Video – united streaming
The End
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