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pirotte Neuro
cerebral cortex
73
Other
Not Applicable
09/08/2005

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Term
what is the neocortex?
Definition
90 percent of cortex, primary cortex of humans
Term
what is the paleocortex?
Definition
piriform lobe, includes 1ary and 2ary olfactory area
Term
what is the archicortex?
Definition
hippocampal formation, recent memory and spatial memory
Term
how many layers in the cortex?
Definition
6
Term
connections of layers I-III of cortex?
Definition
intracortical, intercortical which lends itself to higher associative fxns
Term
connections of layer IV of cortex?
Definition
thalamocortical, ventral tier thalamic nuclei, geniculate nuclei
Term
projection of layer V of cortex?
Definition
cortico- fibers minus corticothalamic
Term
projection of layer VI of cortex?
Definition
corticothalamic fibers
Term
where do pyramidal cells predominate?
Definition
II, III, V, VI
Term
where do granule cells predominate?
Definition
IV
Term
what gyrus comprises the 1somatosensory cortex?
Definition
postcentral gyrus of parietal lobe
Term
what is the Brodmanns of the 1somatosensory cortex?
Definition
312
Term
what thalamic nuclei project to SI?
Definition
VPL, VPM
Term
where do VPL and VPM project?
Definition
SI
Term
where is SII located?
Definition
caudal to SI on upper bank of sylvian canal
Term
where are the somatosensory association areas?
Definition
superior parietal lobe (5,7)
Term
what gyri comprises the prim vis cortex?
Definition
banks of calcarine fissure on medial surface of hemisphere
Term
what is the Brod of the prim vis cortex?
Definition
17
Term
what part of the visual field is on the upper bank of the prim vis cortex?
Definition
lower
Term
what thalamic nucleus projects to the vis cortex?
Definition
lat gen
Term
where does the lat gen n project?
Definition
visual cortex
Term
what gyrus comprises the auditory cortex?
Definition
sup temp gyrus, Heschl's gyrus
Term
what is the Brod area of the auditory cortex?
Definition
41
Term
where is the taste cortex?
Definition
inf end of postcentral gyrus
Term
where is the vestibular cortex?
Definition
parietal-insular
Term
what gyrus comprises the prim mot cortex?
Definition
precentral
Term
what is the Brod of the prim mot cortex?
Definition
4
Term
where is the premotor cortex?
Definition
anterior to prim motor
Term
what is the Brod of premotor cortex?
Definition
6
Term
where is the supp motor cortex?
Definition
medial hemisphere
Term
what is the Brod of the supp mortor cortex?
Definition
6
Term
where is the FEF?
Definition
rostral to premotor
Term
what is the Brod of FEF?
Definition
6
Term
what is the cingulum?
Definition
interconnects the parahippocampal gyrus, cingulate, medial frontal and parietal lobes
Term
what is the uncinate fasiculus?
Definition
connects orbital frontal gyri and ant temporal lobe
Term
what is the sup occipitofrontal fasciculus?
Definition
connects frontal/occipital poles
Term
what is the sup long fasciculus?
Definition
connects frontal, parietal, occipital, and temporal lobes
Term
what is the arctuate fasciculus?
Definition
sup long fasc
Term
what connects the orbital frontal gyri and the ant temporal lobes?
Definition
uncinate fasciculus
Term
what connects the parahippocampal gyrus, cingulate, medial frontal and parietal lobes?
Definition
cingulum
Term
what connects the frontal and occipital poles?
Definition
sup occipitofrontal fasc
Term
what connects the frontal, parietal, occipital, and temporal lobes?
Definition
sup long fasc/arctuate fasc
Term
waht does the ant commisure do?
Definition
connects the middle and inferior temporal gyri
Term
what is the internal capsule?
Definition
afferents and efferents from the CC compacting from the corona radiata
Term
where is the anterior limb of the internal capsule?
Definition
between the lentiform nucleus and the caudate
Term
where is the posterior limb of the internal capsule?
Definition
between the lentiform nucleus and the thalamus
Term
where is the genu of the internal capsule?
Definition
between A/P
Term
which hemisphere normally dominates for speech/language?
Definition
L
Term
what is agnosia?
Definition
the inability to recognize stimuli even in the prescense of primary inputs
Term
what are the intellectual signs of prefrontal damage?
Definition
inability to solve complex problems, decrease in abstract reasoning, lack of foresight
Term
what are the emotional signs of prefrontal damage?
Definition
apathy with R, euphoria with L, inconsiderate, rude, self-centered behavior
Term
fxn of frontal lobe
Definition
movement, language, attention, emotion
Term
fxn of parietal lobe
Definition
somatic sense, integration of somatosens, visual, auditory info
Term
fxn of occipital lobe
Definition
vision
Term
fxn of temporal lobe
Definition
hearing, language perception, memory
Term
what is in cortex layer 1?
Definition
mostly dendrites/axons
Term
what is in layer II and III of the cortex?
Definition
mostly pyramidal cells
Term
what is in layer V and VI of the cortex?
Definition
mostly pyramidal cells
Term
what is in layer IV of the cortex?
Definition
mostly granular cells
Term
what part of the cortex is associational?
Definition
supragranular
Term
what part of the cortex is sensory?
Definition
granular
Term
what part of the cortex is motor?
Definition
infraganular
Term
what does Brod 4,6 represent?
Definition
motor
Term
what does Brod 3,1,2 represetn?
Definition
somatosens
Term
what does Brod 17,18,19 represent?
Definition
visual
Term
what does Brod 41,42 represent?
Definition
auditory (think DMB #41)
Term
what does area 3a correspond to?
Definition
muscle spindles
Term
what does area 3b and 1 correspond to?
Definition
cutaneous afferents
Term
what does area 2 correspond to?
Definition
joint afferents
Term
what does a lesion of the post parietal cortex produce?
Definition
astereognosis, neglect if lesion in on R
Term
what can a lesion of the sec visual cortex cause?
Definition
inability to recognize familiar objects, prosopagnosia (faces)
Term
in the auditory cortex are low frequency areas found rostrally or caudally?
Definition
rostrally
Term
in the auditory cortex are high frequency areas found rostrally or caudally?
Definition
caudally
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