biospychology - localisation of function Flashcards
1
Q
what is the frontal lobe
A
area specialised for motor functions
2
Q
what is the parietal lobe
A
area specialised for sensory information
3
Q
what is the temporal lobe
A
- area specialised for processing auditory information
- medical part of this area includes hippocampi, specialised for memory storage
4
Q
what is the occipital lobe
A
area specialised for processing visual info
5
Q
what is the motor cortex
A
- located in frontal lobe
- different areas control movement in different parts of the body, regions logically located next to eachother
- responsible for the generation of voluntary movement
6
Q
what is the somatosensory cortex
A
- located in the parietal lobe
- different areas receive sensory info from different parts of the body, regions located logically next to another
- responsible for processing sensory info from the skin producing sensations of touch, pressure, pain, temperature and awareness of where our body parts are in space
7
Q
what is the visual cortex
A
- located in the occipital lobe
- contains several areas processing different types of visual info
- optic nerve transmits info in nerve impulses from photoreceptor cells in the retina to the thalamus which acts as a relay station passing info to the visual cortex
8
Q
what is the auditory cortex
A
- located in the temporal lobe
- auditory nerve transmits info as nerve impulses from cochlea to the brain stem then passes to the thalamus which passes to the auditory cortex
9
Q
what is broca’s area
A
- paul broca, studied nine patients who were able to understand spoken language but unable to speak or express their thoughts
- all patients had lesions in the posterior portion of their left frontal hemisphere
- patients with same lesions in their right frontal hemisphere didnt have the same language problems
- broca concluded there was an area in the posterior portion of the left frontal lobe that specialised in language production
- Fedorenko et al, discovered two regions, one involved in language and the other involved in responding to demanding cognitive tasks, suggests that broca’s area is involved in other cognitive tasks that dont require language not just language production
10
Q
A
10
Q
what is wernicke’s area
A
- area involved in understanding language, located in posterior portion of left temporal lobe
- patients with lesion in their wernicke’s area can speak but dont understand language
- wernicke proposed that language involves seperate motor and sensory regions
- motor region, located in broca’s area, close to the area that controls the mouth touch and visual chords
- sensory area, located in wernicke’s area, close to the regions of the brain responsible for auditory and visual input, input from these regions is transferred to wernicke’s area where its recognised as language and associated with meaning
- neural loop called arcuate fasciculus runs between broca’s area and wernicke’s area
