Cerebral Hemispheres (stephens) Flashcards
why did we develop a neocortex
encephalization of the sensory and motor systems
develop of language
lateralization (corpus callosum development)
the neocotex is what part of cortex
-how much of cortex does it take up
newest part of cortex, 90%
primary somestetic broadmen
3,1,2
primary auditory broadman
41,42
primary visual broadman
17
broac’s speech
44,45
wernickes
22
occipital eye field
17
frontal eye field
8
primary motor
4
premotor
6,8
which layers of cortex are important for roles in higher cognitive fnct such as memory, interpretation of sensory input
I and II
which layers of cerebral cortex receive afferents
and what kind of fibers
III and IV
-mainly corticocortical fibers
what layers are the source of efferents from cortex
V and VI
what interconnects the neocortical areas of the 2 cerebral hemispheres and largest of many is what
commissural fibers
-corpus callosum
the uncinate fasciculus interconnects what
base of association areas of frontal lobe to inferior temporal lobe
the inferior temporal lobe is connected to what cortex
entorhinal
what is gerstmann syndrome due to and symptoms
lesion of dominant parietal lone
-finer agnosia, R/L disorientation, dysgraphia and dyscalculia
blood supply to wernickes and brocas area
MCA
important components in posterior limb of IC and lesion results
corticospinal fibers: contralateral spastic hemipleg
somesthetic fibers: contralateral hemianesthesia
what component in retrolenticular region of IC is impotrant and lesion =
optic radiations: contralateral homonymous hemianopia
important in genu of IC and lesion results
corticobulbar fibers: supranuclear facial palsy
