First- and second-order contributions to depth perception in anti-correlated random dot stereograms

Abstract The binocular energy model of neural responses predicts that depth from binocular disparity might be perceived in the reversed direction when the contrast of dots presented to one eye is reversed. While reversed-depth has been found using anti-correlated random-dot stereograms (ACRDS) the f...

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Autores principales:	Jordi M. Asher, Paul B. Hibbard
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Depth Reversal Binocular Energy Second-order Mechanism Correct Disparity Energy Response Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5df7ea1271034af4952bbfb0f2aa615d
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spelling	oai:doaj.org-article:5df7ea1271034af4952bbfb0f2aa615d2021-12-02T15:08:15ZFirst- and second-order contributions to depth perception in anti-correlated random dot stereograms10.1038/s41598-018-32500-42045-2322https://doaj.org/article/5df7ea1271034af4952bbfb0f2aa615d2018-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-32500-4https://doaj.org/toc/2045-2322Abstract The binocular energy model of neural responses predicts that depth from binocular disparity might be perceived in the reversed direction when the contrast of dots presented to one eye is reversed. While reversed-depth has been found using anti-correlated random-dot stereograms (ACRDS) the findings are inconsistent across studies. The mixed findings may be accounted for by the presence of a gap between the target and surround, or as a result of overlap of dots around the vertical edges of the stimuli. To test this, we assessed whether (1) the gap size (0, 19.2 or 38.4 arc min) (2) the correlation of dots or (3) the border orientation (circular target, or horizontal or vertical edge) affected the perception of depth. Reversed-depth from ACRDS (circular no-gap condition) was seen by a minority of participants, but this effect reduced as the gap size increased. Depth was mostly perceived in the correct direction for ACRDS edge stimuli, with the effect increasing with the gap size. The inconsistency across conditions can be accounted for by the relative reliability of first- and second-order depth detection mechanisms, and the coarse spatial resolution of the latter.Jordi M. AsherPaul B. HibbardNature PortfolioarticleDepth ReversalBinocular EnergySecond-order MechanismCorrect DisparityEnergy ResponseMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-19 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Depth Reversal Binocular Energy Second-order Mechanism Correct Disparity Energy Response Medicine R Science Q
spellingShingle	Depth Reversal Binocular Energy Second-order Mechanism Correct Disparity Energy Response Medicine R Science Q Jordi M. Asher Paul B. Hibbard First- and second-order contributions to depth perception in anti-correlated random dot stereograms
description	Abstract The binocular energy model of neural responses predicts that depth from binocular disparity might be perceived in the reversed direction when the contrast of dots presented to one eye is reversed. While reversed-depth has been found using anti-correlated random-dot stereograms (ACRDS) the findings are inconsistent across studies. The mixed findings may be accounted for by the presence of a gap between the target and surround, or as a result of overlap of dots around the vertical edges of the stimuli. To test this, we assessed whether (1) the gap size (0, 19.2 or 38.4 arc min) (2) the correlation of dots or (3) the border orientation (circular target, or horizontal or vertical edge) affected the perception of depth. Reversed-depth from ACRDS (circular no-gap condition) was seen by a minority of participants, but this effect reduced as the gap size increased. Depth was mostly perceived in the correct direction for ACRDS edge stimuli, with the effect increasing with the gap size. The inconsistency across conditions can be accounted for by the relative reliability of first- and second-order depth detection mechanisms, and the coarse spatial resolution of the latter.
format	article
author	Jordi M. Asher Paul B. Hibbard
author_facet	Jordi M. Asher Paul B. Hibbard
author_sort	Jordi M. Asher
title	First- and second-order contributions to depth perception in anti-correlated random dot stereograms
title_short	First- and second-order contributions to depth perception in anti-correlated random dot stereograms
title_full	First- and second-order contributions to depth perception in anti-correlated random dot stereograms
title_fullStr	First- and second-order contributions to depth perception in anti-correlated random dot stereograms
title_full_unstemmed	First- and second-order contributions to depth perception in anti-correlated random dot stereograms
title_sort	first- and second-order contributions to depth perception in anti-correlated random dot stereograms
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/5df7ea1271034af4952bbfb0f2aa615d
work_keys_str_mv	AT jordimasher firstandsecondordercontributionstodepthperceptioninanticorrelatedrandomdotstereograms AT paulbhibbard firstandsecondordercontributionstodepthperceptioninanticorrelatedrandomdotstereograms
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First- and second-order contributions to depth perception in anti-correlated random dot stereograms

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