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Integration of 3D Structure from Disparity into Biological Motion Perception Independent of Depth Awareness
Images projected onto the retinas of our two eyes come from slightly different directions in the real world, constituting binocular disparity that serves as an important source for depth perception - the ability to see the world in three dimensions. It remains unclear whether the integration of disp...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3931706/ https://www.ncbi.nlm.nih.gov/pubmed/24586622 http://dx.doi.org/10.1371/journal.pone.0089238 |
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author | Wang, Ying Jiang, Yi |
author_facet | Wang, Ying Jiang, Yi |
author_sort | Wang, Ying |
collection | PubMed |
description | Images projected onto the retinas of our two eyes come from slightly different directions in the real world, constituting binocular disparity that serves as an important source for depth perception - the ability to see the world in three dimensions. It remains unclear whether the integration of disparity cues into visual perception depends on the conscious representation of stereoscopic depth. Here we report evidence that, even without inducing discernible perceptual representations, the disparity-defined depth information could still modulate the visual processing of 3D objects in depth-irrelevant aspects. Specifically, observers who could not discriminate disparity-defined in-depth facing orientations of biological motions (i.e., approaching vs. receding) due to an excessive perceptual bias nevertheless exhibited a robust perceptual asymmetry in response to the indistinguishable facing orientations, similar to those who could consciously discriminate such 3D information. These results clearly demonstrate that the visual processing of biological motion engages the disparity cues independent of observers’ depth awareness. The extraction and utilization of binocular depth signals thus can be dissociable from the conscious representation of 3D structure in high-level visual perception. |
format | Online Article Text |
id | pubmed-3931706 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-39317062014-02-25 Integration of 3D Structure from Disparity into Biological Motion Perception Independent of Depth Awareness Wang, Ying Jiang, Yi PLoS One Research Article Images projected onto the retinas of our two eyes come from slightly different directions in the real world, constituting binocular disparity that serves as an important source for depth perception - the ability to see the world in three dimensions. It remains unclear whether the integration of disparity cues into visual perception depends on the conscious representation of stereoscopic depth. Here we report evidence that, even without inducing discernible perceptual representations, the disparity-defined depth information could still modulate the visual processing of 3D objects in depth-irrelevant aspects. Specifically, observers who could not discriminate disparity-defined in-depth facing orientations of biological motions (i.e., approaching vs. receding) due to an excessive perceptual bias nevertheless exhibited a robust perceptual asymmetry in response to the indistinguishable facing orientations, similar to those who could consciously discriminate such 3D information. These results clearly demonstrate that the visual processing of biological motion engages the disparity cues independent of observers’ depth awareness. The extraction and utilization of binocular depth signals thus can be dissociable from the conscious representation of 3D structure in high-level visual perception. Public Library of Science 2014-02-21 /pmc/articles/PMC3931706/ /pubmed/24586622 http://dx.doi.org/10.1371/journal.pone.0089238 Text en © 2014 Wang, Jiang http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Wang, Ying Jiang, Yi Integration of 3D Structure from Disparity into Biological Motion Perception Independent of Depth Awareness |
title | Integration of 3D Structure from Disparity into Biological Motion Perception Independent of Depth Awareness |
title_full | Integration of 3D Structure from Disparity into Biological Motion Perception Independent of Depth Awareness |
title_fullStr | Integration of 3D Structure from Disparity into Biological Motion Perception Independent of Depth Awareness |
title_full_unstemmed | Integration of 3D Structure from Disparity into Biological Motion Perception Independent of Depth Awareness |
title_short | Integration of 3D Structure from Disparity into Biological Motion Perception Independent of Depth Awareness |
title_sort | integration of 3d structure from disparity into biological motion perception independent of depth awareness |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3931706/ https://www.ncbi.nlm.nih.gov/pubmed/24586622 http://dx.doi.org/10.1371/journal.pone.0089238 |
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