Collinearity improves alignment in amblyopia as well as in normal vision
| Autor: | Kevin Yuen, Ariella V. Popple, Dennis M. Levi |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Visual perception
media_common.quotation_subject Visual Acuity Gabor patch Amblyopia Article 050105 experimental psychology Vision disorder 03 medical and health sciences 0302 clinical medicine Optics Vision Monocular Orientation Psychophysics medicine Humans Contrast (vision) 0501 psychology and cognitive sciences Vernier acuity media_common business.industry Orientation (computer vision) 05 social sciences Collinearity Sensory Systems Ophthalmology Tilt (optics) Sensory Thresholds Visual Perception medicine.symptom business Psychology Photic Stimulation 030217 neurology & neurosurgery |
| Zdroj: | Vision Research. 47(14):1968-1973 |
| ISSN: | 0042-6989 |
| DOI: | 10.1016/j.visres.2007.04.003 |
| Popis: | In normal vision, three contrast patches containing black and white bars are aligned more precisely when the bars are collinear across the patches [Popple, A., Polat, U., & Bonneh, Y. (2001). Collinear effects on 3-Gabor alignment as a function of spacing, orientation and detectability. Spatial Vision, 14(2), 139–150]. Normally, offsets between the bars in successive patches make the configuration appear tilted, but this effect is reduced in amblyopia [Popple, A. V., & Levi, D. M. (2000). Amblyopes see true alignment where normal observers see illusory tilt. Proceedings of the National Academy of Science of the United States of America, 97(21), 11667–11672]. Our aim was to examine whether collinear bars nonetheless improve the precision of alignment in amblyopia. In a sample of 13 amblyopes, we found that collinear bars did indeed improve the precision of alignment in amblyopia, although both alignment bias and thresholds were higher in the amblyopic eyes for both collinear and non-collinear bars. |
| Databáze: | OpenAIRE |
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