Is orientation-specific color adaptation in human vision due to edge detectors, afterimages, or "dipoles"? |
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Authors: | C S Harris A R Gibson |
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Abstract: | After one looks alternately at red vertical and green horizontal stripes, vertical and horizontal white stripes appear greenish and pink, respectively. This color aftereffect might imply that contour-detecting cells participate in human vision, or might simply be due to afterimages. A procedure that precludes afterimages still yields aftereffects, but sensory units less complex than edge detectors could be responsible. |
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