PSY 3108 Lecture Notes - Lecture 20: Depth Perception, Visual Cortex, Ocular Dominance
7 Sep 2016
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Other names for it: striate cortex, brodmann area 17, visual receiving area, v1 (main name) One of the best understood part of the cortex: partly due to hubel & weisel (nobel prize) Organizational aspects: 6 layered structure, retinotopic map. Organized like the retina: ocular dominance columns. Columns react more to one eye than another: orientation selectivity columns. Columns will react more to certain bars of light on the retina: cytochrome oxidase blobs. Receive inputs in motion processing: location hyper columns. Group of 2 ocular dominance columns and a set of orientation columns. All the neurons you need to code information for an object in a specific time and place. Just fibres form neurones below: layers 2-3. Communicate horizontally with other visual cortical areas: layer 4. Subdivided into 4a, 4b, 4c alpha & 4c beta. Signals are then sent up/down from here to other layers: layers 5. Send descending communications back to subcortical areas.
