Stimulus dependence of interocular suppression

Abstract Interocular suppression is the phenomenon in which the signal from one eye inhibits the other eye in the presence of dissimilar images. Various clinical and laboratory-based tests have been used to assess suppression, which vary in color, contrast, and stimulus size. These stimulus variatio...

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Autores principales:	Wei Hau Lew, Scott B. Stevenson, Daniel R. Coates
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f764d26bcaa84ccdb14ca4ec62bfbb38
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spelling	oai:doaj.org-article:f764d26bcaa84ccdb14ca4ec62bfbb382021-12-02T13:40:51ZStimulus dependence of interocular suppression10.1038/s41598-021-88701-x2045-2322https://doaj.org/article/f764d26bcaa84ccdb14ca4ec62bfbb382021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88701-xhttps://doaj.org/toc/2045-2322Abstract Interocular suppression is the phenomenon in which the signal from one eye inhibits the other eye in the presence of dissimilar images. Various clinical and laboratory-based tests have been used to assess suppression, which vary in color, contrast, and stimulus size. These stimulus variations may yield different spatial extents of suppression, which makes it difficult to compare the outcomes. To evaluate the role of stimulus characteristics, we measured the suppression zone using a binocular rivalry paradigm in normally-sighted observers by systematically varying the stimulus parameters. The stimuli consist of a constantly visible horizontal reference seen by one eye while two vertical suppressors were presented to the other eye. With a keypress, the suppressors appeared for 1 s, to induce a transient suppression zone in the middle part of the reference. Subjects adjusted the width between the suppressors to determine the zone. The zone decreased significantly with increasing spatial frequency and lower contrast. The width was 1.4 times larger than the height. The zone was smaller with negative compared to positive contrast polarity but independent of eye dominance, luminance, and colored filters. A departure from scale invariance was captured with a model suggesting a stimulus-dependent and a small fixed non-stimulus-dependent portion.Wei Hau LewScott B. StevensonDaniel R. CoatesNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Wei Hau Lew Scott B. Stevenson Daniel R. Coates Stimulus dependence of interocular suppression
description	Abstract Interocular suppression is the phenomenon in which the signal from one eye inhibits the other eye in the presence of dissimilar images. Various clinical and laboratory-based tests have been used to assess suppression, which vary in color, contrast, and stimulus size. These stimulus variations may yield different spatial extents of suppression, which makes it difficult to compare the outcomes. To evaluate the role of stimulus characteristics, we measured the suppression zone using a binocular rivalry paradigm in normally-sighted observers by systematically varying the stimulus parameters. The stimuli consist of a constantly visible horizontal reference seen by one eye while two vertical suppressors were presented to the other eye. With a keypress, the suppressors appeared for 1 s, to induce a transient suppression zone in the middle part of the reference. Subjects adjusted the width between the suppressors to determine the zone. The zone decreased significantly with increasing spatial frequency and lower contrast. The width was 1.4 times larger than the height. The zone was smaller with negative compared to positive contrast polarity but independent of eye dominance, luminance, and colored filters. A departure from scale invariance was captured with a model suggesting a stimulus-dependent and a small fixed non-stimulus-dependent portion.
format	article
author	Wei Hau Lew Scott B. Stevenson Daniel R. Coates
author_facet	Wei Hau Lew Scott B. Stevenson Daniel R. Coates
author_sort	Wei Hau Lew
title	Stimulus dependence of interocular suppression
title_short	Stimulus dependence of interocular suppression
title_full	Stimulus dependence of interocular suppression
title_fullStr	Stimulus dependence of interocular suppression
title_full_unstemmed	Stimulus dependence of interocular suppression
title_sort	stimulus dependence of interocular suppression
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f764d26bcaa84ccdb14ca4ec62bfbb38
work_keys_str_mv	AT weihaulew stimulusdependenceofinterocularsuppression AT scottbstevenson stimulusdependenceofinterocularsuppression AT danielrcoates stimulusdependenceofinterocularsuppression
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Stimulus dependence of interocular suppression

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