PSYC 2220 Chapter Notes - Chapter 4: Visual Cortex, Retina, Map
22 Oct 2017
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Document Summary
Retinotopic map - the electronic map of the retina on the cortex. Means that 2 points that are close together on an object and on the retina will activate neurons that are close together in the brain. Apportional of a large area on the cortex to the small fovea is called cortical magnification. Determined in the human cortex using technique called brain imaging. What is happening below the surface by looking at the results of experiments in which a recording electrode was lowered into the cortex. Location columns - perpendicular to the surface of the cortex so that all of the neurons within a location column have their receptive fields at the same location on the retina particular orientation. Orientation columns - each column containing cells that respond best to a. 1 mm dimension for location columns - means that one location column is large enough to contain orientation columns that cover all possible orientations.
