INTEGBI 131 Lecture Notes - Lecture 9: Primary Sensory Areas, Postcentral Gyrus, Primary Motor Cortex
6 Jan 2020
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Cns chapter 13b- cerebrum sensory info through thalamus. Cerebrum (most rostral/nose part of brain) w/2 hemispheres, 83% brain mass, receive. Longitudinal [hemis] & transverse cerebral fissures [cerebrum & cerebell. Central (frontal & parietal), lateral (temporal & parietal/frontal), & parieto-occipital sulci. Insula positioned deep within lateral sulcus (& under frontal, parietal, & temporal lobes) Cc cerebral cortex (gray matter-cell bodies & dendrites, short unmyelinated axons) w/ sensory, association, & motor areas (& higher mental functions in many areas ) Cerebral white matter - commissures, association fibers, projection fibers. Deep cerebral gray matter - basal ganglia & forebrain nuclei, claustrum. Cerebral cortex: conscious, sensations, voluntary movements, communicate, understand, remember. Sensory association areas (interpret info) >-->--> (multiple) multimodal association areas (integrate/interpret info to develop motor response) > premotor cortex/motor association cortex (plans and coordinates complex movements) > primary motor cortex (enacts plan) Sensory areas: conscious awareness of ____sensation (primary sensory cortex & sensory association for each of major senses)
