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Real and visually-induced body inclination differently affect the perception of object stability

The prediction of object stability on earth requires the establishment of a perceptual frame of reference based on the direction of gravity. Across three experiments, we measured the critical angle (CA) at which an object appeared equally likely to fall over or right itself. We investigated whether...

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Detalles Bibliográficos
Autores principales: Laboissière, Rafael, Barraud, Pierre-Alain, Cian, Corinne
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643064/
https://www.ncbi.nlm.nih.gov/pubmed/29036180
http://dx.doi.org/10.1371/journal.pone.0186431
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author Laboissière, Rafael
Barraud, Pierre-Alain
Cian, Corinne
author_facet Laboissière, Rafael
Barraud, Pierre-Alain
Cian, Corinne
author_sort Laboissière, Rafael
collection PubMed
description The prediction of object stability on earth requires the establishment of a perceptual frame of reference based on the direction of gravity. Across three experiments, we measured the critical angle (CA) at which an object appeared equally likely to fall over or right itself. We investigated whether the internal representation of the gravity direction, biased by either simulated tilt (rotating visual surround) or real body tilt situations, influences in a similar fashion the judgment of stability. In the simulated tilt condition, the estimated CA and the perceived gravity are both deviated in the same direction. In the real tilt condition, the orientation of the body affects the perception of gravity direction but has no effect on the estimated CA. Results suggest that people differently weigh gravity direction information provided by visual motion and by visual polarity cues for estimating the stability of objects.
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spelling pubmed-56430642017-10-30 Real and visually-induced body inclination differently affect the perception of object stability Laboissière, Rafael Barraud, Pierre-Alain Cian, Corinne PLoS One Research Article The prediction of object stability on earth requires the establishment of a perceptual frame of reference based on the direction of gravity. Across three experiments, we measured the critical angle (CA) at which an object appeared equally likely to fall over or right itself. We investigated whether the internal representation of the gravity direction, biased by either simulated tilt (rotating visual surround) or real body tilt situations, influences in a similar fashion the judgment of stability. In the simulated tilt condition, the estimated CA and the perceived gravity are both deviated in the same direction. In the real tilt condition, the orientation of the body affects the perception of gravity direction but has no effect on the estimated CA. Results suggest that people differently weigh gravity direction information provided by visual motion and by visual polarity cues for estimating the stability of objects. Public Library of Science 2017-10-16 /pmc/articles/PMC5643064/ /pubmed/29036180 http://dx.doi.org/10.1371/journal.pone.0186431 Text en © 2017 Laboissière 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 (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Laboissière, Rafael
Barraud, Pierre-Alain
Cian, Corinne
Real and visually-induced body inclination differently affect the perception of object stability
title Real and visually-induced body inclination differently affect the perception of object stability
title_full Real and visually-induced body inclination differently affect the perception of object stability
title_fullStr Real and visually-induced body inclination differently affect the perception of object stability
title_full_unstemmed Real and visually-induced body inclination differently affect the perception of object stability
title_short Real and visually-induced body inclination differently affect the perception of object stability
title_sort real and visually-induced body inclination differently affect the perception of object stability
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5643064/
https://www.ncbi.nlm.nih.gov/pubmed/29036180
http://dx.doi.org/10.1371/journal.pone.0186431
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