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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: A19–A26

Mesopic rod and S-cone interactions revealed by modulation thresholds

Andrew J. Zele, Jan Kremers, and Beatrix Feigl  »View Author Affiliations


JOSA A, Vol. 29, Issue 2, pp. A19-A26 (2012)
http://dx.doi.org/10.1364/JOSAA.29.000A19


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Abstract

We analyzed mesopic rod and S-cone interactions in terms of their contributions to the blue–yellow opponent pathway. Stimuli were generated using a four-primary colorimeter. Mixed rod and S-cone modulation thresholds (constant L-, M-cone excitation) were measured as a function of their phase difference. Modulation amplitude was equated using threshold units and contrast ratios. This study identified three interaction types: (1) a linear and antagonistic rod:S-cone interaction, (2) probability summation, and (3) a previously unidentified mutual nonlinear reinforcement. Linear rod:S-cone interactions occur within the blue–yellow opponent pathway. Probability summation involves signaling by different postreceptoral pathways. The origin of the nonlinear reinforcement is possibly at the photoreceptors.

© 2012 Optical Society of America

OCIS Codes
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.1720) Vision, color, and visual optics : Color vision
(330.5510) Vision, color, and visual optics : Psychophysics

ToC Category:
Mesopic and peripheral color vision

History
Original Manuscript: August 4, 2011
Revised Manuscript: October 25, 2011
Manuscript Accepted: November 1, 2011
Published: December 22, 2011

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

Citation
Andrew J. Zele, Jan Kremers, and Beatrix Feigl, "Mesopic rod and S-cone interactions revealed by modulation thresholds," J. Opt. Soc. Am. A 29, A19-A26 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-2-A19

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