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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

  • Vol. 5, Iss. 8 — Aug. 1, 1988
  • pp: 1356–1361

Spectral response of contrast-flash masking

Adam Reeves and Marcus A. Bearse, Jr.  »View Author Affiliations


JOSA A, Vol. 5, Issue 8, pp. 1356-1361 (1988)
http://dx.doi.org/10.1364/JOSAA.5.001356


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Abstract

Parafoveal spectral response functions for the contrast-flash masking of a just-visible 661-nm bar test are proportional to Π5 (Stiles’s long-wave function) at long wavelengths but show an unexpected dip around 575 nm and are almost flat at short wavelengths, on a dim (2-Td) rod-desensitizing 500-nm auxiliary. This effect is not due to rod intrusions or scattered light. Masking functions are approximately proportional to Π5 throughout the spectrum, however, if the 500-nm auxiliary is replaced by a π5-equated 445-nm auxiliary or if the flanking bar mask used in the main experiment is replaced by a uniform contrast-flash mask. These results suggest that a contour-sensitive interaction involving short-wave cones may modify the extent of masking in the pathway that detects the long-wave test.

© 1988 Optical Society of America

History
Original Manuscript: June 11, 1987
Manuscript Accepted: April 19, 1988
Published: August 1, 1988

Citation
Adam Reeves and Marcus A. Bearse, "Spectral response of contrast-flash masking," J. Opt. Soc. Am. A 5, 1356-1361 (1988)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-5-8-1356

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