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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. 31, Iss. 4 — Apr. 1, 2014
  • pp: A220–A225

Factors governing the speed of color adaptation in foveal versus peripheral vision

Romain Bachy and Qasim Zaidi  »View Author Affiliations


JOSA A, Vol. 31, Issue 4, pp. A220-A225 (2014)
http://dx.doi.org/10.1364/JOSAA.31.00A220


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Abstract

Troxler showed that fixated stimuli fade faster in peripheral than in foveal vision. We used a time-varying procedure, to show that peripheral adaptation is faster and more pronounced than foveal adaptation for the three cardinal color modulations that isolate different classes of retinal ganglion cells. We then tested the hypothesis that fixational eye movements control the magnitude and speed of adaptation, by simulating them with intermittent flashes, and attenuating their effects with blurred borders. Psychophysical and electrophysiological results confirmed the eye movement-based hypothesis. By comparing effects across classes of ganglion cells, we found that the effects of eye movements are mediated not only by the increase in size of receptive fields with eccentricity, but also by the sensitivity of different ganglion cells to sharp borders and transient changes in the stimulus. Finally, using the same paradigm with retinal ganglion cells, we show that adaptation parameters do not vary for the three classes of ganglion cells for eccentricities from 2° to 12°, in the absence of eye movement.

© 2014 Optical Society of America

OCIS Codes
(330.1720) Vision, color, and visual optics : Color vision
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5380) Vision, color, and visual optics : Physiology
(330.5510) Vision, color, and visual optics : Psychophysics
(330.7320) Vision, color, and visual optics : Vision adaptation

ToC Category:
Mesopic and peripheral vision

History
Original Manuscript: October 7, 2013
Revised Manuscript: December 18, 2013
Manuscript Accepted: December 27, 2013
Published: February 12, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Romain Bachy and Qasim Zaidi, "Factors governing the speed of color adaptation in foveal versus peripheral vision," J. Opt. Soc. Am. A 31, A220-A225 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-4-A220

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