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Dynamic size-weight changes after object lifting reduce the size-weight illusion
In the size-weight illusion, the smaller object from two equally weighted objects is typically judged as being heavier. One explanation is that the mismatch between the weight expectation based on object size and actual sensory feedback influences heaviness perception. In most studies, the size of a...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821833/ https://www.ncbi.nlm.nih.gov/pubmed/31666612 http://dx.doi.org/10.1038/s41598-019-52102-y |
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author | van Polanen, Vonne Davare, Marco |
author_facet | van Polanen, Vonne Davare, Marco |
author_sort | van Polanen, Vonne |
collection | PubMed |
description | In the size-weight illusion, the smaller object from two equally weighted objects is typically judged as being heavier. One explanation is that the mismatch between the weight expectation based on object size and actual sensory feedback influences heaviness perception. In most studies, the size of an object is perceived before its weight. We investigated whether size changes would influence weight judgement if both would be perceived simultaneously. We used virtual reality to change the size and weight of an object after lifting and asked participants to judge whether the object became lighter or heavier. We found that simultaneous size-weight changes greatly reduced the size-weight illusion to perceptual biases below discrimination thresholds. In a control experiment in which we used a standard size-weight illusion protocol with sequential lifts of small and large objects in the same virtual reality setup, we found a larger, typical perceptual bias. These results show that the size-weight illusion is smaller when size and weight information is perceived simultaneously. This provides support for the prediction mismatch theory explaining the size-weight illusion. The comparison between perceived and expected weight during the lifting phase could be a critical brain mechanism for mediating the size-weight illusion. |
format | Online Article Text |
id | pubmed-6821833 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-68218332019-11-05 Dynamic size-weight changes after object lifting reduce the size-weight illusion van Polanen, Vonne Davare, Marco Sci Rep Article In the size-weight illusion, the smaller object from two equally weighted objects is typically judged as being heavier. One explanation is that the mismatch between the weight expectation based on object size and actual sensory feedback influences heaviness perception. In most studies, the size of an object is perceived before its weight. We investigated whether size changes would influence weight judgement if both would be perceived simultaneously. We used virtual reality to change the size and weight of an object after lifting and asked participants to judge whether the object became lighter or heavier. We found that simultaneous size-weight changes greatly reduced the size-weight illusion to perceptual biases below discrimination thresholds. In a control experiment in which we used a standard size-weight illusion protocol with sequential lifts of small and large objects in the same virtual reality setup, we found a larger, typical perceptual bias. These results show that the size-weight illusion is smaller when size and weight information is perceived simultaneously. This provides support for the prediction mismatch theory explaining the size-weight illusion. The comparison between perceived and expected weight during the lifting phase could be a critical brain mechanism for mediating the size-weight illusion. Nature Publishing Group UK 2019-10-30 /pmc/articles/PMC6821833/ /pubmed/31666612 http://dx.doi.org/10.1038/s41598-019-52102-y Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article van Polanen, Vonne Davare, Marco Dynamic size-weight changes after object lifting reduce the size-weight illusion |
title | Dynamic size-weight changes after object lifting reduce the size-weight illusion |
title_full | Dynamic size-weight changes after object lifting reduce the size-weight illusion |
title_fullStr | Dynamic size-weight changes after object lifting reduce the size-weight illusion |
title_full_unstemmed | Dynamic size-weight changes after object lifting reduce the size-weight illusion |
title_short | Dynamic size-weight changes after object lifting reduce the size-weight illusion |
title_sort | dynamic size-weight changes after object lifting reduce the size-weight illusion |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6821833/ https://www.ncbi.nlm.nih.gov/pubmed/31666612 http://dx.doi.org/10.1038/s41598-019-52102-y |
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