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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 2 — Feb. 1, 2012

Middle- and long-wavelength discrimination declines with rod photopigment regeneration

Vicki J. Volbrecht, Janice L. Nerger, and Armando R. Trujillo  »View Author Affiliations


JOSA A, Vol. 28, Issue 12, pp. 2600-2606 (2011)
http://dx.doi.org/10.1364/JOSAA.28.002600


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Abstract

Hue-discrimination functions were derived from hue-naming data ( 480 620 nm , 20 nm steps) obtained in 4 min intervals from 4 min to 28 min postbleach at 10 ° temporal retinal eccentricity. Hue-naming data were also obtained in the fovea. Hue-discrimination functions derived at the 4, 8, and 12 min intervals were very similar to those derived in the fovea. As time postbleach exceeded 12 min and rod sensitivity increased, the shape of the hue- discrimination functions changed. Most notably, the minimum between 560 580 nm disappeared and the just noticeable differences (JNDs) for the longer wavelength stimuli increased. The long-wavelength suppression in hue discrimination may be due to rod input in the magnocellular pathway interacting and affecting the long- wavelength sensitivity of the parvocellular pathway.

© 2011 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
(330.5310) Vision, color, and visual optics : Vision - photoreceptors

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: May 25, 2011
Revised Manuscript: August 18, 2011
Manuscript Accepted: September 7, 2011
Published: November 18, 2011

Virtual Issues
Vol. 7, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Vicki J. Volbrecht, Janice L. Nerger, and Armando R. Trujillo, "Middle- and long-wavelength discrimination declines with rod photopigment regeneration," J. Opt. Soc. Am. A 28, 2600-2606 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-28-12-2600

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