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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: Steven A. Burns
  • Vol. 24, Iss. 9 — Sep. 1, 2007
  • pp: 2499–2504

Orientation variance discrimination in amblyopia

Behzad Mansouri, Robert F. Hess, and Harriet A. Allen  »View Author Affiliations


JOSA A, Vol. 24, Issue 9, pp. 2499-2504 (2007)
http://dx.doi.org/10.1364/JOSAA.24.002499


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Abstract

Our previous results showed that while amblyopes can efficiently integrate visual signals, they are poor at segregating signals in noise. This could be either because integration detectors have broader bandwidths or because of a selective extrastriate segregation anomaly. One consequence of the former would be poorer variance discrimination. Using a two-alternative forced-choice paradigm, observers were asked to judge the orientational variance for arrays of 16 Gabors. All observers, be they normal or amblyopic, could perform the task similarly, although at high spatial frequencies, amblyopic eyes needed slightly more incremental variance than the normal eyes. We conclude that normals and amblyopes integrate signals in a similar way.

© 2007 Optical Society of America

OCIS Codes
(330.5510) Vision, color, and visual optics : Psychophysics
(330.7310) Vision, color, and visual optics : Vision

ToC Category:
Vision, color, and visual optics

History
Original Manuscript: February 16, 2007
Revised Manuscript: April 5, 2007
Manuscript Accepted: April 20, 2007
Published: July 6, 2007

Virtual Issues
Vol. 2, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Behzad Mansouri, Robert F. Hess, and Harriet A. Allen, "Orientation variance discrimination in amblyopia," J. Opt. Soc. Am. A 24, 2499-2504 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-9-2499

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