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Time course of adaptation along the RG cardinal axis

โœ Scribed by Arthur G. Shapiro; Jennifer L. Beere; Qasim Zaidi

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
114 KB
Volume
26
Category
Article
ISSN
0361-2317

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โœฆ Synopsis

We examine how the RG cardinal mechanism adapts to a shift from one spatially uniform field to another. A probe-flash paradigm allowed the response to be estimated at an initial adaptation state, an end adaptation state, and four intermediate time conditions. The threshold curves were higher and flatter in the intermediate conditions than at the beginning and end of adaptation. The intermediate results cannot be explained by combinations of cone or opponent-level multiplicative and subtractive gain controls, and implicate higher-order adaptation processes.

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