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cortical layers/BA

cerebral cortex

QuestionAnswer
Cortical Layer II external granule layer small pyramidal cells, multipolar, Golgi II projects to V/VI
Cortical Layer III external pyramidal layer medium pyramidal cells; magnopyramidal cells projects to V/VI
Cortical Layer IV internal granule layer--main input layer to layer II/III for cortical processing spiny stellate cells
Cortical Layer V external pyramidal layer--Betz cells; bigger in motor cortex--main output layer
Cortical Layer VI Fusiform (non pyramidal) cells
Meynert cells pyramidal cells in visual cortex
BA 3-1-2 primary sensory cortex input from VPM and VPL lesions lead to loss of epicritic and hard/soft feeling
BA 4 primary motor cortex receives afferents from VL contralateral paralysis due to lesions most distal musculature is affected
BA 6 premotor area and supplementary motor area planning movement and modifying learned movement receives afferents from VA
BA 10 prefrontal dorsal lateral mediates ability to integrate across time; planning activity receives afferents from DM no motivation, difficulty in working memory and attention
BA11 prefrontal ventral orbital emotional consequences; weighing options; connections with limbic structures damage results in disinhibition, poor ethical judgement, perseveration, and disproportional response to stimuli
BA 17 primary visual cortex input from lateral geniculate and Pulvinar nuclei
BA 5 superior parietal lobule/ secondary somatosensory cortex responsible for attention-receives afferents from LP contralateral neglect
BA 7 superior parietal lobule/ parietal association cortex projects to LD contralateral neglect
BA 22 Wernicke's area left hemi interpretation of language and language comprehension wernicke's aphasia
BA 39 angular gyrus involved in visual aspects of language and tone aspects of speech Gerstmann's syndrome-left-right confusion and finger agnosia
BA 40 supramarginal gyrus integration of visual, auditory, and somatosensory info agraphia (inability to write), acalculia (inability to calculate), dyslexia, tactile agnosia
BA 41,42 transverse gyrus of heschl integration of auditory information
BA 44,45 Broca's Area motor speech area--plans motor movements form speech Broca's Aphasia--difficulty with articulation and anomia, agrammatism
Cortical Layer I molecular layer glial cells--protoplasmic astrocytes
Created by: emward
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