S-cone discrimination for stimuli with spatial and temporal chromatic contrast.

S-cone discrimination for stimuli with spatial and temporal chromatic contrast. Research Abstract Details 

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S-cone discrimination for stimuli with spatial and temporal chromatic contrast. Abstract Text:

In the natural environment, color discriminations are made within a rich context of spatial and temporal variation. In classical laboratory methods for studying chromatic discrimination, there is typically a border between the test and adapting fields that introduces a spatial chromatic contrast signal. Typically, the roles of spatial and temporal contrast on chromatic discrimination are not assessed in the laboratory approach. In this study, S-cone discrimination was measured using stimulus paradigms that controlled the level of spatio-temporal S-cone contrast between the tests and adapting fields. The results indicate that S-cone discrimination of chromaticity differences between a pedestal and adapting surround is equivalent for stimuli containing spatial, temporal or spatial-and-temporal chromatic contrast between the test field and the surround. For a stimulus condition that did not contain spatial or temporal contrast, the visual system adapted to the pedestal instead of the surround. The data are interpreted in terms of a model consistent with primate koniocellular pathway physiology. The paradigms provide an approach for studying the effects of spatial and temporal contrast on discrimination in natural scenes.

S-cone discrimination for stimuli with spatial and temporal chromatic contrast. Publishing Authors By Initials

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PUBMED ID PMID:

MEDLINE DATE: 2008 May-Jun

S-cone discrimination for stimuli with spatial and temporal chromatic contrast. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Visual neuroscience

VOLUME: 25

Page Numbers: 349-54

Journal Abbreviation: Vis. Neurosci.

ISSN: 1469-8714

DAY: 7

MONTH: 07

YEAR: 2008

S-cone discrimination for stimuli with spatial and temporal chromatic contrast. Information

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LANGUAGE: eng

NlmUniqueID: 8809466

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Grant and Affiliation Information for S-cone discrimination for stimuli with spatial and temporal chromatic contrast.

AFFILIATION: Visual Science Laboratories, Department of Ophthalmology and Visual Science, The University of Chicago, Chicago, Illinois.

Country: England

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MEDLINETA: Vis Neurosci

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