Induced Colors and Colors Produced by Chromatic Illumination May Have Similar Physiological Bases

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Abstract
Thirteen Os obtained afterimages of each of two targets. The “induced” target was a green ring surrounding an achromatic (but phenomenally magenta) disk; the “neutralized” target was the same as the induced one, except that chromatic green illumination was added to the disk so as to make it phenomenally achromatic. Two findings support the conjecture that the retinal process underlying perception of induced colors is similar to that underlying perception of colors produced by chromatic illumination: (1) an induced magenta can be mixed with a green produced by chromatic illumination so as to yield a phenomenally neutral color, and (2) the green in the afterimage of the disk in the induced target was more saturated than the green in the afterimage of the disk in the neutralized target.

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