Reports

Is Orentation-Specific Color Adaptation in Human Vision Due to Edge Detectors, Afterimages, or "Dipoles"?

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Science  27 Dec 1968:
Vol. 162, Issue 3861, pp. 1506-1507
DOI: 10.1126/science.162.3861.1506

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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