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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 29, Iss. 2 — Feb. 1, 2012
  • pp: A152–A156

Contrast adaptation reveals increased organizational complexity of chromatic processing in the visual evoked potential

Chad S. Duncan, Eric J. Roth, Yoko Mizokami, Kyle C. McDermott, and Michael A. Crognale  »View Author Affiliations


JOSA A, Vol. 29, Issue 2, pp. A152-A156 (2012)
http://dx.doi.org/10.1364/JOSAA.29.00A152


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Abstract

Results from psychophysics and single-unit recordings suggest that color vision comprises multiple stages of processing. Postreceptoral channels appear to consist of both a stage of broadly tuned opponent channels that compare cone signals and a subsequent stage, which includes cells tuned to many different directions in color space. The chromatic visual evoked potential (crVEP) has demonstrated chromatic processing selective for cardinal axes of color space. However, crVEP evidence for higher-order color mechanisms is lacking. The present study aimed to assess the contribution of lower- and higher-order color mechanisms to the crVEP by using chromatic contrast adaptation. The results reveal the presence of mechanisms tuned to intermediate directions in color space in addition to those tuned to the fundamental cardinal axes.

© 2012 Optical Society of America

OCIS Codes
(330.1720) Vision, color, and visual optics : Color vision
(330.1800) Vision, color, and visual optics : Vision - contrast sensitivity
(330.4270) Vision, color, and visual optics : Vision system neurophysiology
(330.7320) Vision, color, and visual optics : Vision adaptation

ToC Category:
Retinal and cortical color processing

History
Original Manuscript: September 2, 2011
Revised Manuscript: November 22, 2011
Manuscript Accepted: November 25, 2011
Published: January 25, 2012

Virtual Issues
Vol. 7, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Chad S. Duncan, Eric J. Roth, Yoko Mizokami, Kyle C. McDermott, and Michael A. Crognale, "Contrast adaptation reveals increased organizational complexity of chromatic processing in the visual evoked potential," J. Opt. Soc. Am. A 29, A152-A156 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-2-A152

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