Illusory occlusion affects stereoscopic depth perception

When occlusion and binocular disparity cues conflict, what visual features determine how they combine? Sensory cues, such as T-junctions, have been suggested to be necessary for occlusion to influence stereoscopic depth perception. Here we show that illusory occlusion, with no retinal sensory cues,...

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Main Authors: Chen, Zhimin, Denison, Rachel N., Whitney, David, Maus, Gerrit W.
Other Authors: School of Humanities and Social Sciences
Format: Article
Language:English
Published: 2018
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Online Access:https://hdl.handle.net/10356/87384
http://hdl.handle.net/10220/45391
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-873842020-03-07T12:10:39Z Illusory occlusion affects stereoscopic depth perception Chen, Zhimin Denison, Rachel N. Whitney, David Maus, Gerrit W. School of Humanities and Social Sciences Illusory Occlusion Stereoscopic Depth Perception When occlusion and binocular disparity cues conflict, what visual features determine how they combine? Sensory cues, such as T-junctions, have been suggested to be necessary for occlusion to influence stereoscopic depth perception. Here we show that illusory occlusion, with no retinal sensory cues, interacts with binocular disparity when perceiving depth. We generated illusory occlusion using stimuli filled in across the retinal blind spot. Observers viewed two bars forming a cross with the intersection positioned within the blind spot. One of the bars was presented binocularly with a disparity signal; the other was presented monocularly, extending through the blind spot, with no defined disparity. When the monocular bar was perceived as filled in through the blind spot, it was perceived as occluding the binocular bar, generating illusory occlusion. We found that this illusory occlusion influenced perceived stereoscopic depth: depth estimates were biased to be closer or farther, depending on whether a bar was perceived as in front of or behind the other bar, respectively. Therefore, the perceived relative depth position, based on filling-in cues, set boundaries for interpreting metric stereoscopic depth cues. This suggests that filling-in can produce opaque surface representations that can trump other depth cues such as disparity. Published version 2018-07-30T08:21:45Z 2019-12-06T16:40:42Z 2018-07-30T08:21:45Z 2019-12-06T16:40:42Z 2018 Journal Article Chen, Z., Denison, R. N., Whitney, D., & Maus, G. W. (2018). Illusory occlusion affects stereoscopic depth perception. Scientific Reports, 8(1), 5297-. 2045-2322 https://hdl.handle.net/10356/87384 http://hdl.handle.net/10220/45391 10.1038/s41598-018-23548-3 en Scientific Reports © 2018 The Author(s) (Nature Publishing Group). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ 9 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Illusory Occlusion
Stereoscopic Depth Perception
spellingShingle Illusory Occlusion
Stereoscopic Depth Perception
Chen, Zhimin
Denison, Rachel N.
Whitney, David
Maus, Gerrit W.
Illusory occlusion affects stereoscopic depth perception
description When occlusion and binocular disparity cues conflict, what visual features determine how they combine? Sensory cues, such as T-junctions, have been suggested to be necessary for occlusion to influence stereoscopic depth perception. Here we show that illusory occlusion, with no retinal sensory cues, interacts with binocular disparity when perceiving depth. We generated illusory occlusion using stimuli filled in across the retinal blind spot. Observers viewed two bars forming a cross with the intersection positioned within the blind spot. One of the bars was presented binocularly with a disparity signal; the other was presented monocularly, extending through the blind spot, with no defined disparity. When the monocular bar was perceived as filled in through the blind spot, it was perceived as occluding the binocular bar, generating illusory occlusion. We found that this illusory occlusion influenced perceived stereoscopic depth: depth estimates were biased to be closer or farther, depending on whether a bar was perceived as in front of or behind the other bar, respectively. Therefore, the perceived relative depth position, based on filling-in cues, set boundaries for interpreting metric stereoscopic depth cues. This suggests that filling-in can produce opaque surface representations that can trump other depth cues such as disparity.
author2 School of Humanities and Social Sciences
author_facet School of Humanities and Social Sciences
Chen, Zhimin
Denison, Rachel N.
Whitney, David
Maus, Gerrit W.
format Article
author Chen, Zhimin
Denison, Rachel N.
Whitney, David
Maus, Gerrit W.
author_sort Chen, Zhimin
title Illusory occlusion affects stereoscopic depth perception
title_short Illusory occlusion affects stereoscopic depth perception
title_full Illusory occlusion affects stereoscopic depth perception
title_fullStr Illusory occlusion affects stereoscopic depth perception
title_full_unstemmed Illusory occlusion affects stereoscopic depth perception
title_sort illusory occlusion affects stereoscopic depth perception
publishDate 2018
url https://hdl.handle.net/10356/87384
http://hdl.handle.net/10220/45391
_version_ 1681048019392266240