Localisation of function AO1
- Created by: Jordan64
- Created on: 23-08-17 17:15
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- Localisation of Function
- Holistic theory replaced by localisation in recent years
- 19th Century: Holistic - all parts of brain involved in processing thought and action
- Specific areas of brain later linked with physical and psychological functions
- If an area of brain damaged - function associated with area also affected
- Brain divided into two hemispheres and lateralised
- Brain two halves: left and right hemisphere
- Lateralisation: some physical and psychological functions controlled by particular hemisphere
- Left side controlled by right hemisphere, vice versa
- Outer layer: Cerebral cortex
- covers inner part of brain, 3mm thick, developed
- Grey matter = location of cell bodies
- Divided into 4 lobes: frontal, parietal, occipital & temporal
- Motor: back of frontal lobe, controls voluntary movement
- Damage = loss in fine motor movements
- Stomatosensory area: front of parietal lobe, processes sensory info from skin
- amount of stomatosensory area to body part denotes sensitivity
- Visual area: occipital lobe at back of brain, each eye sends info from right visual field to left visual cortex, vice versa
- Damage to left hemisphere = blindness to right visual field, vice versa
- Auditory area: in temporal lobe, analyses speech-based info
- Damage = partial hearing loss
- Motor: back of frontal lobe, controls voluntary movement
- Broca's area: speech production
- Left frontal lobe, Damage = Broca's aphasia
- Slow, laborous speech, difficulty finding & naming objects, difficulty with prepositions and conjunctions
- Left frontal lobe, Damage = Broca's aphasia
- Wernicke's area: language comprehension
- back of temporal lobe, damage = Wernicke's aphasia
- Fluent but meaningless speech - neologisms
- back of temporal lobe, damage = Wernicke's aphasia
- Holistic theory replaced by localisation in recent years
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