NS 8 -cerebral cortex Flashcards
describe the cerebral cortex
regional specilisation of function
what is the function of the thalamus?
relay and integration, en route to cortex
the Cerebral cortex has two types of specialization, name them?
Primary and association cortex
what is the exit and entry point for the primary cortex?
exit - motor
entry point - sensory
what happens in the association cortex?
Integration, complex, processing
is the majority of the cortex primary or association?
asoociation
Where is the primary motor cortex located?
precentral gyrus
where is the most direction of motor activity?
primary motor cortex
what is the function of the primary motor cortex?
force, direction and speed of muscle interactions
what is the homunculus?
when certain parts of the body have enlarged representations
what is the supplementary motor area responsible for?
planning complex tasks
what is the premotor complex (which lies lateral to precentral gyrus) responsible for?
preparation for action
which gyrus is associated with the primary sensory cortex?
post central gyrus
which cortex is responsible for interpretation
association somatosensory cortex
where is the superior parietal lobe?
lies lateral to post central gyrus
what is the superior parietal lobe responsible for?
awareness/ perception in space
which cortex is the prefrontal region?
association cortex
which lobe is responsible for personality?
frontal
list the features of frontal lobe damage
- personality changes
- deficits in planning
- perservence
- primitive reflexes
define expressive aphasia
language is reduced to disjointed words and sentance construction is poor
comprehension is okay
define Receptive aphasia
unable to understand/ generate meaningful language
what is Brocas area?
regions of the frontal lobe with functions linked to speech production
what is Wernikes area ?
region in the temporal lobe invovled in comprehension or understanding language
in which hemisphere does language processing occur?
left hemisphere - 96%
what occurs on the right side of the brain?
drawing, music and spacial perception
hemispheres can switch specialisation sides
true
what is the thalamus?
collection of nuclei (gray matter)
function of thalamus?
relay and processes sensory and motor info which is en route to the cortex
where is the thalamus located?
sits on top of brainstem in the lateral wall of third ventricle
which gyrus is associated with communication with the somatosensory cortex?
post central gyrus
the VPL nucleus relays sensory info from the…
body
the VPM nucleus of the thalamus relays sensory info from the
head
what communicates with the primary visual cortex?
lateral geniculate body of the thalamus
where does the medial geniculate body of the thalamus relay info to?
auditory cortex
connections with the motor cortex…
motor feedback from basal ganglia and cerebellum via the ventro anterior and lateral nuclei
