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Chromatic induction in humans: How are the cone signals combined to provide opponent processing?

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Teufel,  HJ
Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Wehrhahn,  C
Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Teufel, H., & Wehrhahn, C. (2004). Chromatic induction in humans: How are the cone signals combined to provide opponent processing? Vision Research, 44(20), 2425-2435. doi:10.1016/j.visres.2004.04.015.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-D7DB-F
Abstract
We investigated the effect of 16 isoluminant chromatic surrounds on the perceived colour of an enclosed grey test-field at photopic (43 cd/m2) conditions. Stimuli were shown on a grey background identical to the test-field. Use of these stimuli implies that activations of receptoral , and and postreceptoral and mechanisms by surround colours are known quantitatively. This allows to predict shifts in colour of the test-field in terms of receptoral (adaptation) as well as postreceptoral (contrast) mechanisms assuming a standard two-stage model. Predictions are tested using matching and hue compensation procedures. Both procedures yield comparable results that are consistent with the assumption that postreceptoral mechanisms explain the observed shifts in perceived colour.