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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. 17, Iss. 6 — Jun. 1, 2000
  • pp: 986–993

Channel selection with non-white-noise masks

Joshua A. Solomon  »View Author Affiliations


JOSA A, Vol. 17, Issue 6, pp. 986-993 (2000)
http://dx.doi.org/10.1364/JOSAA.17.000986


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Abstract

It is frequently assumed that the accuracy with which luminance gratings can be detected depends solely on the signal-to-noise ratio at the output of a single linear channel. Proportionality between threshold elevation and power spectral density is implicit in this assumption. I demonstrate that this proportionality does not hold for 1-cycle/degree gratings masked by low-pass noise with a 0.5-cycle/degree cutoff frequency. This implies that different channels can mediate detection, depending on the contrast of masking stimuli.

© 2000 Optical Society of America

OCIS Codes
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.1880) Vision, color, and visual optics : Detection
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5510) Vision, color, and visual optics : Psychophysics

History
Original Manuscript: July 28, 1999
Revised Manuscript: February 23, 2000
Manuscript Accepted: February 23, 2000
Published: June 1, 2000

Citation
Joshua A. Solomon, "Channel selection with non-white-noise masks," J. Opt. Soc. Am. A 17, 986-993 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-6-986

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