localisation of functions

Question 1

localisation vs holism

Answer 1

localisation- reductionism as it suggests each area of brain is responsible for each action
- found by broca and wernicke + suggested damage of one area affects function of controlled area
holism- suggests brain is a whole

Question 2

hemispheres

Answer 2

-2 hemispheres (left and right)
-outer layer is cerebral cortex (3mm)
**cortex appears grey due to location of cell bodies
- lateralisation suggests each hemisphere controls specific functions
e.g right side controlled by left hemisphere

Question 3

frontal lobe

Answer 3

motor - back of frontal lobe BOTH HEMISPHERES
controls voluntary movement
damage = loss of control over fine movements

Question 4

parietal lobe

Answer 4

somatosensory - FRONT OF BOTH HEMIPSHERES parietal lobe
seperated from motor area by cental sulcus
- amount of somatosensory area allocated to a specific body part indicates its sensitivity (most in face and hands)

Question 5

temporal lobe

Answer 5

auditory - temporal lobe
-speech based info
damage= partial hearing loss
damage to wernicke= ability to comprehend language

Question 6

occiputal lobe

Answer 6

visual- occiputal lobe
- right visual field = left hemisphere
left visual field = right hemisphere
damage to left VF= loss of RH of both eyes

Question 7

language area

Answer 7

LEFT HEMISPHERE
broca’s area- left frontal lobe
responsible for speech production
damage= broca’s aphasia (slow non-fluent speech)
wernicke’s area- left temporal lobe
responsible for speech comprehension
damage= wernicke’s aphasia (nonsense words)