certain functions are fixed in particular regions of the brain
visual centres
located at back of brain - occipital lobe receives and processes visual info
info from right visual field is processed in left hemisphere
info from left visual field is processed in right hemisphere
auditory centres
located in temporal lobe - analyses acoustic info
info from left ear goes to right hemisphere
info from right ear goes to left hemisphere
motor cortex
located in frontal lobe
responsible for voluntary movements by sending signals to the muscles in body
regions logically arranged
somatosensory cortex
located in parietal lobe
detects sensory events
brocas area
language production
cognitive tasks
located in frontal lobe of left hemisphere
brocas patients could understand language but couldn’t speak
wernicke’s area
language comprehension
located in left temporal lobe
wernicke’s patients could speak but couldn’t understand language
✔️fMRI scans are used to measure the activity of the brain in response to a stimulus - whilst performing a certain task, some areas of brain have an increased level of oxygen and other regions become deoxygenated
✔️phineas gage study - part of brain damaged due to pole going up his eye, through his brain and out his head - personality completely changed after
X case studies - unrepresentative and ungeneralisable - can’t rely on it too much