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This representation is uneven, with the fovea (the area at the center of the visual field) overrepresented compared to the periphery. The visual circuitry in the human cerebral cortex contains several dozen distinct retinotopic maps, each devoted to analyzing the visual input stream in a particular way. The primary visual cortex (Brodmann area 17) contains many neurons that are most easily activated by edges with a particular orientation moving across a particular point in the visual field. Visual areas

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