Orientation variance discrimination in amblyopia
JOSA A, Vol. 24, Issue 9, pp. 2499-2504 (2007)
http://dx.doi.org/10.1364/JOSAA.24.002499
Enhanced HTML 
Acrobat PDF (447 KB)
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
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Modulation frequency and orientation tuning of second-order texture mechanisms (JOSAA)
- Input of long- and middle-wavelength-sensitive cones to orientation discrimination (JOSAA)
- The Rose model, revisited (JOSAA)
- Why use noise? (JOSAA)
- Effects of aging on calculation efficiency and equivalent noise (JOSAA)
Related Conference Papers
- Intraocular Camera Design for Retinal Prostheses
- Peripheral stimulus flicker enhances measured visual field extent in toddlers
- There is no word superiority effect in peripheral vision
- Contextual deployment of attention in driving
- Detecting and discriminating curved gabors for static, drifting, and warping stimuli
« Previous Article | Next Article »
OSA is a member of 