Localisation Of Function Flashcards
(25 cards)
What is localisation?
The theory that different areas of the brain are responsible for specific behaviours, processes or activities
What are the 4 lobes?
Frontal, Temporal, Parietal, Occiputal
Where is the occiputal lobe located?
Back of the brain
Where is the parietal lobe located?
Top and centre of the brain
Where is the temporal lobe located?
Middle bottom of the brain.
Where is the frontal lobe located?
Front of the brain
Where is the visual area found?
Occiputal lobe
Where is the somatosensory area found?
Parietal lobe
Where is the motor area located?
Frontal lobe
Where is the auditory area located?
Temporal lobe
What makes brocas and wernickes area different to the motor, auditory, somatosensory and visual areas?
Broca and Wernickes area are only in the left hemisphere
The others are on both sides of the brain
What is hemispheric lateralisation?
Each hemisphere of the brain is specialised to perform different functions
Which cortisees are contralateral?
Visual, motor and somatosensory area
What is the brains cortex?
Surface layer of the brain
“Grey matter”
What is the visual cortex
The brains visual processing centre
Each hemispheres occiputal lobe receives info from the contralateral visual field
Which areas are divided by the central sulcus?
Motor and somatosensory cortex
What is the role of the motor cortex?
Responsible for voluntary motor movements
Sends signals to muscles
Contralateral
What is the role of the somatosensory cortex?
Receives sensory info
Contralateral
What is the role of the auditory cortex?
Receives and processes sound info from ears
Located in both hemispheres
Describe Brocas area.
Located in left frontal lobe
Responsible for speech production
Discovered after post mortem study on patient “Tan”
What did case study “Tan” tell us about Broca’s area?
Speech deficit, still understands language
Damage to area causes brocas aphasia
(broCAN comprehend)
What incident / person supports localisation?
Phinneas Gage
AO3
Expand - Brain scans.
(+) Peterson et al, brain scans.
Wernickes area active during listening
Broca’s area active during reading
Semantic and episodic memories reside in different areas of prefrontal cortex
AO3
Holistically distributed - expand
(-) Higher cognitive functions are distributed holistically
Study- removed different parts of context in rats learning to complete maze
- No area was more important for rat learning the route
