PS262 Study Guide - Final Guide: Radioactive Tracer, Parietal Lobe, Temporal Lobe

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22 Apr 2017
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Spatial organization: the way stimuli at speci c locations in the environment are represented by the activity at speci c locations in the ns. Retinotopic map: electronic map of the retina on the cortex. Cortical magni cation: the small area of the fovea is represented by a large area on the visual cortex. Brain imaging: pet: radioactive tracer, fmri: measurement of blood ow- brain activity. One location column is large enough to contain orientation columns that cover all possible orientations: a location column with all of its orientation columns is called a hypercolumn. The cortical representation doesn"t have to resemble the stimulus, it just has to contain. Tiling: each circle/elipse in a scene represents an area that sends info to one location column, working together, these columns cover the entire visual eld. Object discrimination problem: given 2 shapes and told to pick the correct one, dif cult for monkeys without their temporal lobes.

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