Adaptation to interocular differences in blur
| Autor: | Elysse Kompaniez, Lucie Sawides, Susana Marcos, Michael A. Webster |
|---|---|
| Přispěvatelé: | Ministerio de Economía y Competitividad (España), European Commission |
| Rok vydání: | 2013 |
| Předmět: |
Vision Disparity
media_common.quotation_subject Adaptation (eye) Astigmatism 050105 experimental psychology Contrast Sensitivity 03 medical and health sciences 0302 clinical medicine Optics Vision Monocular Perception medicine Humans 0501 psychology and cognitive sciences Computer vision Adaptation Interocular transfer media_common Depth Perception Blur Monocular business.industry Adaptation Ocular 05 social sciences Articles medicine.disease Refractive Errors Sensory Systems Frequency spectrum Ophthalmology Visual Perception Artificial intelligence business Focus (optics) Psychology 030217 neurology & neurosurgery Photic Stimulation |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname Journal of Vision |
| Popis: | 14 pags., 9 figs. Adaptation to a blurred image causes a physically focused image to appear too sharp, and shifts the point of subjective focus toward the adapting blur, consistent with a renormalization of perceived focus. We examined whether and how this adaptation normalizes to differences in blur between the two eyes, which can routinely arise from differences in refractive errors. Observers adapted to images filtered to simulate optical defocus or different axes of astigmatism, as well as to images that were isotropically blurred or sharpened by varying the slope of the amplitude spectrum. Adaptation to the different types of blur produced strong aftereffects that showed strong transfer across the eyes, as assessed both in a monocular adaptation task and in a contingent adaptation task in which the two eyes were simultaneously exposed to different blur levels. Selectivity for the adapting eye was thus generally weak. When one eye was exposed to a sharper image than the other, the aftereffects also tended to be dominated by the sharper image. Our results suggest that while shortterm adaptation can rapidly recalibrate the perception of blur, it cannot do so independently for the two eyes, and that the binocular adaptation of blur is biased by the sharper of the two eyes' retinal images. This study was supported by EY-10834 (MW), Spanish Government Formacion de Personal Investigador (FPI) Predoctoral Fellowship (LS), FIS2008- 02065 (SM) and FIS2011-25637 (SM), and European Research Council ERC-2011-AdG-294099 (SM). |
| Databáze: | OpenAIRE |
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