An unusual kind of contrast adaptation: Shifting a contrast comparison level
نویسندگان
چکیده
منابع مشابه
An unusual kind of contrast adaptation: shifting a contrast comparison level.
We have found an unusual kind of contrast adaptation in human pattern vision that seems fundamentally different from previously reported effects. As the observer adapts to different levels of contrast, the visibility of some contrast-defined (second-order) patterns dramatically increases and that of others dramatically decreases. Oddly, visibility is poor for patterns containing contrasts both ...
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We present psychophysical results demonstrating the interaction of two contrast adaptation processes in human vision: (1) A contrast-gain-control process of the normalization type and (2) a recently-discovered shifting, rectifying contrast-comparison process. Observers adapted (for 1 s) to a grid of Gabor patches at one contrast, then a brief (94 ms) test pattern was shown, and then the adapt p...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2007
ISSN: 1534-7362
DOI: 10.1167/7.8.12