Independent neural mechanisms for bright and dark information in binocular stereopsis.
Early visual processing is organized into a number of independent channels. In the retina, increments and decrements of brightness are processed independently by different groups of neurons. For psychophysical measurements of human vision, independence can be tested statistically. Using this criterion in a depth judgement task, we show here that, for binocular stereo vision, increments and decrements are treated independently, at least as far as the level at which information from the left an...Expand abstract
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