The Constancy of Colored After-Images

We undertook psychophysical experiments to determine whether the color of the after-image produced by viewing a colored patch which is part of a complex multi-colored scene depends on the wavelength-energy composition of the light reflected from that patch. Our results show that it does not. The aft...

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Bibliographic Details
Published inFrontiers in human neuroscience Vol. 11; p. 229
Main Authors Zeki, Semir, Cheadle, Samuel, Pepper, Joshua, Mylonas, Dimitris
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Research Foundation 10.05.2017
Frontiers Media S.A
Subjects
after-images
Color
color constancy
Color vision
Image processing
Neuroscience
Neurosciences
Physiology
Psychophysics
Retina
vision
vision
color
color constancy
after-images
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Summary:We undertook psychophysical experiments to determine whether the color of the after-image produced by viewing a colored patch which is part of a complex multi-colored scene depends on the wavelength-energy composition of the light reflected from that patch. Our results show that it does not. The after-image, just like the color itself, depends on the ratio of light of different wavebands reflected from it and its surrounds. Hence, traditional accounts of after-images as being the result of retinal adaptation or the perceptual result of physiological opponency, are inadequate. We propose instead that the color of after-images is generated after colors themselves are generated in the visual brain.
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Edited by: Mikhail Lebedev, Duke University, USA
Reviewed by: Dale Purves, Duke NUS Graduate Medical School, Singapore; Janus J. Kulikowski, University of Manchester, UK
ISSN:1662-5161
1662-5161
DOI:10.3389/fnhum.2017.00229