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Vestibular Facilitation of Optic Flow Parsing
Simultaneous object motion and self-motion give rise to complex patterns of retinal image motion. In order to estimate object motion accurately, the brain must parse this complex retinal motion into self-motion and object motion components. Although this computational problem can be solved, in princ...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3388053/ https://www.ncbi.nlm.nih.gov/pubmed/22768345 http://dx.doi.org/10.1371/journal.pone.0040264 |
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author | MacNeilage, Paul R. Zhang, Zhou DeAngelis, Gregory C. Angelaki, Dora E. |
author_facet | MacNeilage, Paul R. Zhang, Zhou DeAngelis, Gregory C. Angelaki, Dora E. |
author_sort | MacNeilage, Paul R. |
collection | PubMed |
description | Simultaneous object motion and self-motion give rise to complex patterns of retinal image motion. In order to estimate object motion accurately, the brain must parse this complex retinal motion into self-motion and object motion components. Although this computational problem can be solved, in principle, through purely visual mechanisms, extra-retinal information that arises from the vestibular system during self-motion may also play an important role. Here we investigate whether combining vestibular and visual self-motion information improves the precision of object motion estimates. Subjects were asked to discriminate the direction of object motion in the presence of simultaneous self-motion, depicted either by visual cues alone (i.e. optic flow) or by combined visual/vestibular stimuli. We report a small but significant improvement in object motion discrimination thresholds with the addition of vestibular cues. This improvement was greatest for eccentric heading directions and negligible for forward movement, a finding that could reflect increased relative reliability of vestibular versus visual cues for eccentric heading directions. Overall, these results are consistent with the hypothesis that vestibular inputs can help parse retinal image motion into self-motion and object motion components. |
format | Online Article Text |
id | pubmed-3388053 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-33880532012-07-05 Vestibular Facilitation of Optic Flow Parsing MacNeilage, Paul R. Zhang, Zhou DeAngelis, Gregory C. Angelaki, Dora E. PLoS One Research Article Simultaneous object motion and self-motion give rise to complex patterns of retinal image motion. In order to estimate object motion accurately, the brain must parse this complex retinal motion into self-motion and object motion components. Although this computational problem can be solved, in principle, through purely visual mechanisms, extra-retinal information that arises from the vestibular system during self-motion may also play an important role. Here we investigate whether combining vestibular and visual self-motion information improves the precision of object motion estimates. Subjects were asked to discriminate the direction of object motion in the presence of simultaneous self-motion, depicted either by visual cues alone (i.e. optic flow) or by combined visual/vestibular stimuli. We report a small but significant improvement in object motion discrimination thresholds with the addition of vestibular cues. This improvement was greatest for eccentric heading directions and negligible for forward movement, a finding that could reflect increased relative reliability of vestibular versus visual cues for eccentric heading directions. Overall, these results are consistent with the hypothesis that vestibular inputs can help parse retinal image motion into self-motion and object motion components. Public Library of Science 2012-07-02 /pmc/articles/PMC3388053/ /pubmed/22768345 http://dx.doi.org/10.1371/journal.pone.0040264 Text en MacNeilage et al. 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 MacNeilage, Paul R. Zhang, Zhou DeAngelis, Gregory C. Angelaki, Dora E. Vestibular Facilitation of Optic Flow Parsing |
title | Vestibular Facilitation of Optic Flow Parsing |
title_full | Vestibular Facilitation of Optic Flow Parsing |
title_fullStr | Vestibular Facilitation of Optic Flow Parsing |
title_full_unstemmed | Vestibular Facilitation of Optic Flow Parsing |
title_short | Vestibular Facilitation of Optic Flow Parsing |
title_sort | vestibular facilitation of optic flow parsing |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3388053/ https://www.ncbi.nlm.nih.gov/pubmed/22768345 http://dx.doi.org/10.1371/journal.pone.0040264 |
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