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Implications of the pedestal effect for models of contrast-processing and gain-control

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons84314

Wichmann,  FA
Department Empirical Inference, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Wichmann, F. (1999). Implications of the pedestal effect for models of contrast-processing and gain-control.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0013-E789-8
Abstract
Understanding contrast processing is essential for understanding spatial vision. Pedestal contrast systematically affects slopes of functions relating 2-AFC contrast discrimination performance to pedestal contrast. The slopes provide crucial information because only full sets of data allow discrimination among contrast-processing and gain-control models. Issues surrounding Weber's law will also be discussed.