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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: A394–A400

Independence and interaction of luminance and chromatic contributions to spatial hyperacuity performance

Bonnie Cooper and Barry B. Lee  »View Author Affiliations


JOSA A, Vol. 31, Issue 4, pp. A394-A400 (2014)
http://dx.doi.org/10.1364/JOSAA.31.00A394


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Abstract

Here we test interactions of luminance and chromatic input to spatial hyperacuity mechanisms. First, we tested alignment of luminance and chromatic gratings matched or mismatched in contrast polarity or grating type. Thresholds with matched gratings were low while all mismatched pairs were elevated. Second, we determined alignment acuity as a function of luminance or chromatic contrast alone or in the presence of constant contrast components of the other type. For in-phase components, performance followed the envelope of the more sensitive mechanism. However, polarity reversals revealed an asymmetric effect for luminance and chromatic conditions, which suggested that luminance can override chromatic mechanisms in hyperacuity; we interpret these findings in the context of spatial mechanisms.

© 2014 Optical Society of America

OCIS Codes
(330.1720) Vision, color, and visual optics : Color vision
(330.5510) Vision, color, and visual optics : Psychophysics
(330.6100) Vision, color, and visual optics : Spatial discrimination

ToC Category:
Color sensitivity and appearance

History
Original Manuscript: September 30, 2013
Revised Manuscript: February 1, 2014
Manuscript Accepted: February 2, 2014
Published: March 11, 2014

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

Citation
Bonnie Cooper and Barry B. Lee, "Independence and interaction of luminance and chromatic contributions to spatial hyperacuity performance," J. Opt. Soc. Am. A 31, A394-A400 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-4-A394

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