Interocular contrast difference drives illusory 3D percept

Abstract Any processing delay between the two eyes can result in illusory 3D percepts for moving objects because of either changes in the pure disparities over time for disparity sensors or by changes to sensors that encode motion/disparity conjointly. This is demonstrated by viewing a fronto-parall...

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Autores principales:	Alexandre Reynaud, Robert F. Hess
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e551af9123ea4f4e9183ebd7587d8b09
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spelling	oai:doaj.org-article:e551af9123ea4f4e9183ebd7587d8b092021-12-02T11:52:30ZInterocular contrast difference drives illusory 3D percept10.1038/s41598-017-06151-w2045-2322https://doaj.org/article/e551af9123ea4f4e9183ebd7587d8b092017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06151-whttps://doaj.org/toc/2045-2322Abstract Any processing delay between the two eyes can result in illusory 3D percepts for moving objects because of either changes in the pure disparities over time for disparity sensors or by changes to sensors that encode motion/disparity conjointly. This is demonstrated by viewing a fronto-parallel pendulum through a neutral density (ND) filter placed over one eye, resulting in the illusory 3D percept of the pendulum following an elliptical orbit in depth, the so-called Pulfrich phenomenon. Here we use a paradigm where a cylinder rotating in depth, defined by moving Gabor patches is presented at different interocular phases, generating strong to ambiguous depth percepts. This paradigm allows one to manipulate independently the contrast and the luminance of the patches to determine their influence on perceived motion-in-depth. Thus we show psychophysically that an interocular contrast difference can itself result in a similar illusory 3D percept of motion-in-depth. We argue that contrast, like luminance (ND filter) can modify the dynamics of visual neurons resulting in an interocular processing delay or an interocular velocity difference.Alexandre ReynaudRobert F. HessNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexandre Reynaud Robert F. Hess Interocular contrast difference drives illusory 3D percept
description	Abstract Any processing delay between the two eyes can result in illusory 3D percepts for moving objects because of either changes in the pure disparities over time for disparity sensors or by changes to sensors that encode motion/disparity conjointly. This is demonstrated by viewing a fronto-parallel pendulum through a neutral density (ND) filter placed over one eye, resulting in the illusory 3D percept of the pendulum following an elliptical orbit in depth, the so-called Pulfrich phenomenon. Here we use a paradigm where a cylinder rotating in depth, defined by moving Gabor patches is presented at different interocular phases, generating strong to ambiguous depth percepts. This paradigm allows one to manipulate independently the contrast and the luminance of the patches to determine their influence on perceived motion-in-depth. Thus we show psychophysically that an interocular contrast difference can itself result in a similar illusory 3D percept of motion-in-depth. We argue that contrast, like luminance (ND filter) can modify the dynamics of visual neurons resulting in an interocular processing delay or an interocular velocity difference.
format	article
author	Alexandre Reynaud Robert F. Hess
author_facet	Alexandre Reynaud Robert F. Hess
author_sort	Alexandre Reynaud
title	Interocular contrast difference drives illusory 3D percept
title_short	Interocular contrast difference drives illusory 3D percept
title_full	Interocular contrast difference drives illusory 3D percept
title_fullStr	Interocular contrast difference drives illusory 3D percept
title_full_unstemmed	Interocular contrast difference drives illusory 3D percept
title_sort	interocular contrast difference drives illusory 3d percept
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/e551af9123ea4f4e9183ebd7587d8b09
work_keys_str_mv	AT alexandrereynaud interocularcontrastdifferencedrivesillusory3dpercept AT robertfhess interocularcontrastdifferencedrivesillusory3dpercept
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Interocular contrast difference drives illusory 3D percept

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