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Cerebral cortex Flashcards

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13646287322Layers of cerebral cortexNeocortex, paleocortex, archicortex0
13646289569Neocortex6-layer structure that appeared late in vertebrate evolution, layers not equally prominent everywhere1
13646291869Superficial layer of neocortexMolecular layer (doesn't have a lot of cells)2
13646294427Deepest layer of neocortexPolymorphic layer3
13646299921Paleocortexdevelops with olfactory system, interconnected with limbic structures4
13646301996Archicortexconsists of hippocampus5
13646304163Betz cellslargest neurons of CNS (most in motor cortex)6
13646306252Pyramidal cellsmost numerous neurons of neocortex7
13646309025Nonpyramidal cellscells with short axons, remain within cortex (primarily interneurons)8
13646317517Association fibersconnect fibers within the same hemisphere9
13646348359Commisural fibersconnects the two hemispheres10
13646354517Association fiber fasciculussuperior longitudinal superior occipitofrontal inferior occipitofrontal cingulum11
13646380782superior longitudinal fasciculusarc above the insula between the frontal lobe and posterior portions of the hemisphere where it fans out among the parietal, occipital and temporal lobes12
13646384223superior occipitofrontal fasciculusruns between the frontal lobe and superior parts of the parietal and occipital lobes (narrow fiber bundle)13
13646388488inferior occipitofrontal fasciculuspasses below insula between the frontal and occipital lobes, traversing the temporal lobes14
13646396311cingulumcourses within the cingulate gyrus and continues around within hippocampus15
13646400718Area 4primary motor area (precentral gyrus)16
13646402221Primary motor areaprecentral gyrus17
13646403183Area 6premotor area, supplementary motor area (superior and middle frontal gyrus)18
13646407950premotor area, supplementary motor areasuperior and middle frontal gyrus19
13646410338area 44Motor association area, Broca's area (inferior frontal gyrus)20
13646414299Motor association area, Broca's areainferior frontal gyrus21
13646415558areas 3,2,1primary somatosensory area (postcentral gyrus)22
13646423298primary somatosensory areapostcentral gyrus23
13646423299area 17primary visual area (banks of calcarine fissure)24
13646427118primary visual areabanks of calcarine fissure25
13646437695area 41primary auditory area (posterior superior temporal gyrus, Heschl's gyrus)26
13646440538primary auditory areaposterior superior temporal gyrus, Heschl's gyrus27
13646442490area 22Auditory association area, Wernicke's area (anterior and middle superior temporal gyrus)28
13646447893Auditory association area, Wernicke's areaanterior and middle superior temporal gyrus29
13646455604unimodal association areasadjacent to primary area devoted to the activity of the primary area30
13646464161multimodal association areashigh level intellectual functioning31
13646473583larger in LH than in RHplanum temporale32
13646481890dominant hemisphere for languageleft hemisphere33
13646488327perisylvian language zonesurrounds lateral or Sylvian fissure, includes Broca's area34
13646502993Aphasiadifficulty using language, problems accessing set of symbols that humans use to represent concepts35
13646509451nonfluent aphasiaBroca's aphasia36
13646510770Broca's aphasiaproduce few words, either written or spoken. Words produced with difficulty37
13646515868Wernicke's aphasiacan produce spoken and written words but sequences or words are impaired in their linguistic content. Difficulty comprehending language38
13646519137Paraphasiasubstitutions of one letter or word for another39
13646521732Neologismsinsertion of new and meaningless word40
13646523203Jargonstringing together of words and phrases in an order that conveys little or no meaning41
13646527716Destruction of Broca's areadeprive motor cortex of the instructions needed to generate language, muscles involved would be normal in other activities, comprehension of language would be relatively unaffected42
13646534273fluent aphasiaWernicke's aphasia43
13646537640Destruction of Wernicke's areawords would be produced without regard for their meaning44
13646550600damage to superior longitudinal fasciculusLeaves Broca's area unchecked and result in another form of fluent aphasia45
13646553651conduction aphasiasimilar in speaking to Wernicke's, have relatively intact comprehension46
13646556222transcortical aphasiacaused by damage outside the perisylvanian language zone47
13646560803Prosodyrhythmic aspects of speech48
13646563677agnosiainability to recognize identity or some other property of objects when using a given sense, even though the sense is intact49
13646567768RH functionprosody, solves problems in more holistic manner50
13646571453corpus callosuminterconnects hemispheres. largest fiber bundle in the brain51

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