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Brodman Areas/Cortex

Neuro Final Exam

TermDefinition
primary motor cortex-area 4 origin of pyramidal efferent projections- make up corticobulbar and corticospinal tracts
primary sensory cortex-area 17, 18, 19 visual function 19- association with visual area of contralateral space
primary somatosensory cortex-areas 1, 2, 3 somatosensory- post-central gyrus afferents- VPL, VPM, assoc. fibers from adjacent primary motor cortex efferents- assoc. fibers to ipsilateral motor cortex, commissural fibers, projection fibers to VPN and periaqueductal gray(suppresses pain)
primary sensory cortex-temporal lobe-areas 41, 42, 22 auditory 41- receives most info from medial geniculate nucleus 42- receives from medial geniculate but mostly from 41
unimodal sensory association cortex info from primary sensory cortex-multistage hierarchial processor that carries out successively more sophistocated analysis of neural activity in primary sensory cortex
unimodal motor association cortex projects to primary motor cortex-develops complex motor actions involving multiple joints/structuresheter
heteromodal association areas bidirectional connections w both motor and sensory cortices of all modalities and limbic cortex- highest order of mental functions
frontal lobe actions, decisions, problem solving, taking in information and making use of the information
anterior cerebral artery supplies knee, hip, trunk- medial portions
frontal eye-field- area 8 voluntary conjugate movement of eyes- lesion here will make eyes deviate to effected eye
reflex following center- area 7 parietal lobe works with this area to allow the eyes to find an object and follow it in space
premotor cortex- area 6 gross coordination of voluntary motor activity-supplementary motor area and premotor area(cognitive input and sensory input)
Broca's motor speech cortex- area 44, 45 44- speech production, 45-language comprehension inferior frontal gyrus
supplementary motor area projects to primary motor cortex, involved in developing motor programs for complex actions involving multiple joints/structures
prefrontal cortex anterior frontal lobes containing dorsolateral prefrontal cortex, orbitofrontal cortex, medial and anterior prefrontal cortex, ant and ventral cingulate cortex- works for executive fxn
dorsolateral prefrontal cortex brodman areas 9-46- fxn- highest cortical area responsible for executive fxn, important for working memory, decision making, integration of information
orbitofrontal cortex primitive- fear, hunger, thirst more complex- love, envy, jealousy, ethics, morals limbic system-emotions
cingulate gyrus integration area connecting prefrontal cortex and limbic system- activated less in people who are not as outgoing active in problem solving, recognizing errors
somatosensory association cortex- areas 5 and 7 left side areas 5 and 7- gross integration of fine touch sensation and even more fine tune interpretation right side-spatial control related to visual system
supramarginal gyrus- area 40- inferior parietal lobe sensory association- ability to write meaningful language and integrates kinesthetic memories w auditory commands
arcuate fasciculus goes from brocas area to wernickes area
wernickes area- 22 left side- association with meaningful speech right side-association w emotional infliction of specch(prosidy)
angular gyrus- area 39 integration of auditory and visual information- highly active during interpretation of meaningful written language
insula anterior portion- receives info having to do with smell, taste, visceral fxn and limbic fxn posterior- auditory, somesthetic, and senorimotor
Created by: kristen_cannici
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