PSYCH 345 Study Guide - Quiz Guide: Visual Cortex, Stimulus Modality, Sensory Cortex
Document Summary
Brain maps: system for classifying and defining cortical regions; orderly representation of a sensory surface (e. g. body, visual fields) onto the surface of the cortex. Cytoarchitectonic: based on organization, structure, & distribution of cortical cells: brodmann"s map: identified 52 regions based on cell layers, structural classification= functional differences. Thalamo-cortico projections: subnuclei convey signals from different modalities and project to different cortical primary areas: lgn, p (pulvinar bidirectional) Hierarchical org: from modality- specific regions (one sense) to increasing integration (many senses) Contralateral organization: the left hemisphere represents the right side of the body primarily the right ear (not always true), always true for the eye right visual field. Receptive field: the region of the sensory surface that makes a cell fire: touch: the location on the body; vision: the locations on the retina; audition: the regions of the basilar membrane (in the cochlea)
