Flicker between equal-luminance colors examined with multidimensional scaling
JOSA A, Vol. 27, Issue 3, pp. 523-531 (2010)
http://dx.doi.org/10.1364/JOSAA.27.000523
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Abstract
Even when two rapidly alternating color stimuli are equated in luminance, the flicker between them is not always zero. By one hypothesis this residual chromatic flicker is tritanopic, like edge distinctness: dependent purely on L- and M-cone stimulation, with no contribution from S-cones. Judgments of flicker intensity between pairs of colors were analyzed with multidimensional scaling (MDS)—in effect treating them as an index of color dissimilarity. They reveal a systematic reduction of flicker when stimulus pairs differ along a chartreuse–magenta direction in the color plane, corresponding to an effective compression of color space along this axis or an equivalent elongation along a blue–orange axis. In contrast, judgments of edge distinctness between the same pairs reveal the expected tritanopic axis of compression. It follows that chromatic flicker does receive a contribution from S-cone stimulation, but this interacts with the contribution from L- and M-cones, perhaps due to phase delays.
© 2010 Optical Society of America
OCIS Codes
(330.1720) Vision, color, and visual optics : Color vision
(330.5020) Vision, color, and visual optics : Perception psychology
ToC Category:
Vision, Color, and Visual Optics
History
Original Manuscript: June 5, 2009
Revised Manuscript: October 23, 2009
Manuscript Accepted: December 21, 2009
Published: February 25, 2010
Virtual Issues
Vol. 5, Iss. 6 Virtual Journal for Biomedical Optics
Citation
David Bimler, "Flicker between equal-luminance colors examined with multidimensional scaling," J. Opt. Soc. Am. A 27, 523-531 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-27-3-523
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