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61 Cards in this Set

  • Front
  • Back
Which are the I-III layers of the cortex?
Layers I-III are supragranular. I is moleculare, II is external granular, III is external pyramidal.
What are the supragranular layers concerned with?
higher association functions
What is layer IV of the cortex?
Internal granular layer
What fibers does the internal granular layer?
thalamocortical fibers
Which part of the cortex has a well developed Layer IV?
primary sensory
What are layers V-VI of the cortex?
What connections does layer V have?
corticostriate, corticospinal, corticopontine, corticobulbar, corticorubral
What connection does layer VI have?
Where are pyramidal cells found?
Layers II, III, IV
What are giant pyramidal cells called?
What is the parietal lobe involved in?
Somatosensory and intergration with visual and auditory
What is the temporal lobe involved in?
auditory, learning, memory
What is the occipital lobe involved in?
What is the frontal lobe involved in?
initiation and control of voluntary movement, language expressions, mood personality judgement
What is the insular cortex involved in?
What are the major inputs to the primary somatosensory cortex?
from VPL and VPM
Which layer is the most dense in the primary somatosensory cortex?
layer IV
Where is the primary somatosensory cortex located?
Post-central gyrus of parietal lobe
What is BA 40?
secondary somatosensory
Where is BA 40 located?
behind 312, in the upper bank of the lateral sulcus
What is BA 40 concenered with?
some nociceptive stimuli
What Broadman's areas are is the somatosensory association cortex?
What are the afferents of the somatosensory assocation cortex?
from 312 and 40
Where is BA 17 located?
Along bank of calcarine sulcus
Which layer is prominent in BA 17?
layer IV
What is it called when the radiations from the lower retina loop over the temporal horn of the lateral ventrical?
Meyer's Loop
What are the afferents to the primary visual cortex?
optic radiations from contralateral field of vision
Where does the primary visual cortex project to?
tectum and pretectum
Which layer is prominent in BA 18 and 19?
Large III
What projects to BA 18, 19?
LGN and pulvinar
Where does BA 18,19 project to?
superior colliculus
What is BA 41?
Primary auditory cortex
Which layer is prominent in BA 41?
Layer IV
What are the inputs to BA 41?
MGN and contralateral cochlea
What is BA 42?
Secondary auditory cortex
What is BA 4?
Primary motor cortex
Which layer is prominent in BA 4?
Layer V with Betz cells
Where does the primary motor cortex project?
to Cortico- spinal, bulbar, pontin, striate, thalami
What is BA 6?
premotor cortex
Where does the primary motor cortex receive info?
Ventral lateral thalamic
Where does the premotor cortex project to?
the primary cotex, SC,and BC
Where do afferent to the premotor cortex begin?
sensory association, ventral lateral nucleus
What is the supplementary motor cortex responsible for?
coordinating posture and bilateral movement
What does the cingulum connect?
parahippocampal gyrus, cingulate,medial frontal and parietal
What does the inferior occipital fasciculus connect?
frontal and occipital lobes
What does the uncinate fasciculus connect?
orbitofrontal gyrus with temp lobe
What does superior occiptofrontal fasciculus connect?
Frontal, parietal, occipital
What does the superior longitudinal fasciculus connect?
frontal, parietal, occipcital, and temporal
What are the components of the anterior limb of the internal capsule?
anterior thalamic radiations, frontopontine fibers
What are the components of the genu of the internal capsule?
Corticobulubar fibers
What are the components of the posterior limb of the internal capsule?
middle thalamic raiation, posterior thalamic radiation, corticospinal, retrolenticular, sublenticular
Which layer does the cingulum, inf and sup occipitofrontal fasciculus, superior longitudinal fasciculus, and uncinate fasciculus orginate?
Layer II
Which layer do the commissures arise from?
Layer III
What is the function of efferents from the primary visual cortex?
visual tracking
What happens when the primary visual cortex is lesioned?
cortical blindness
What happens when the secondary and tertiary cortices are lesioned?
inability to recognize familiar objects
What is it called when you can't recognize a face?
Which eye field is responsible for saccadic eye movements?
frontal eye fields
What is the dorsolateral prefrontal cortex function?
look away task
What is blind sight?
Even though BA17 is gone, some info gets thru to BA18,19 which allows pt to guess
What happens to a pt with bilateral lesions to V4?