Two contrast adaptation processes: Contrast normalization and shifting, rectifying contrast comparison

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Two contrast adaptation processes: contrast normalization and shifting, rectifying contrast comparison.

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: 2009

ISSN: 1534-7362

DOI: 10.1167/9.4.30