L6 - Localisation Flashcards
Define localisation of function
Specific functions, like language, have specific locations in the brain
Visual centre is in the
Visual cortex
Occipital lobe
Auditory centre is in
Auditory cortex
Temporal lobe
Motor cortex is in the
Frontal lobe
Precentral gyrus
Somatosensory cortex is
In the postcentral gyrus
Parietal lobe
Broca’s area is in the
Frontal lobe
Wernicke’s area is in the
Temporal lobe
Broca’s area and Wernicke’s area are connected by the
Arcuate fasciculus
Broca’s area function
Speech production
Also responds to demanding cognitive tasks
Wernicke’s area function
Understanding and processing spoken language
Somatosensory cortex role
Uses sensory info from skin
Produces sensations like pain pressure, then localises it to body parts
Motor cortex is responsible for
Generating voluntary motor movements
How do visual centres work?
Light->photoreceptors in retina ->nerve impulses via optical nerve to the brain ->terminates in thalamus which relays to visual cortex
How do the auditory centres work?
Cochlea converts sound waves to nerve impulses ->via auditory nerve to auditory cortex ->brain stem decodes ->thalamus processes and relays to auditory cortex
+ related to aphasia
Expressive aphasia is when can’t produce but can understand language due to Broca’s area damage
Receptive aphasia is opposite due to Wernicke’s area damage
