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- Title
Color from invisible patterns.
- Authors
Shady, Sherif; MacLeod, Donald I.A.
- Abstract
Human pattern resolution is limited by optical blurring as well as neural filtering by a cascade of retinal and cortical sites with progressively lower resolution limits. Curiously, pattern structure can influence perceived color: a high-contrast, monochromatic (single wavelength) pattern appears desaturated (closer to white) relative to a uniform field of the same wavelength. Here we show that this desaturation is evident even when the pattern's frequency is too high for conscious perception, implicating a nonlinear process—namely light adaptation—at the level of single cone photoreceptors. We propose a neural mechanism in which fast, involuntary eye movements serve to shift control over perception between two competing cone populations, each operating at different levels of adaptation.
- Subjects
EYE movements; PHOTORECEPTORS
- Publication
Nature Neuroscience, 2002, Vol 5, Issue 8, p729
- ISSN
1097-6256
- Publication type
Article
- DOI
10.1038/nn894