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News in Physiological Sciences, Vol 5, 152-155, Copyright © 1990 by International Union of Physiological Sciences
ARTICLES |
R Von der Heydt, E Peterhans and G Baumgartner
The visual cortex looks at things in a strange way: perception of the white of a sheet of paper is related to activity of the neurons stimulated by its edges, not its surface;contour is a product of a cortical mechanism that integrates various "occlusion cues," not an intensity step that excites local edge detectors.
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