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Duplicity theory and ground squirrels: Linkages between photoreceptors and visual function

Published online by Cambridge University Press:  02 June 2009

Gerald H. Jacobs
Gerald H. Jacobs
Affiliation:
Department of Psychology, University of California, Santa Barbara
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Abstract

The presence of rod and cone photorceptors has traditionally been linked to well-defined classes of visual capacity by the generalization known as duplicity theory. This paper summarizes results obtained from studies of vision and the visual system in ground squirrels (Spermophilus sp.) that reveal instances where structure/function linkages depart from expectations based in duplicity theory. The details of these exceptions are reviewed and their possible mechanisms discussed.

Keywords

PhotoreceptorsDuplicity theoryGround squirrelsSpermophilus sp.
Type
Research Article
Information
Visual Neuroscience , Volume 5 , Issue 3 , September 1990 , pp. 311 - 318
Copyright
Copyright © Cambridge University Press 1990

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