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Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal Space
Closer objects are invariably perceived as bigger than farther ones and are therefore easier to detect and discriminate. This is so deeply grounded in our daily experience that no question has been raised as to whether the advantage for near objects depends on other features (e.g., depth itself). In...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
SAGE Publications
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6238160/ https://www.ncbi.nlm.nih.gov/pubmed/30285541 http://dx.doi.org/10.1177/0956797618795679 |
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author | Blini, Elvio Desoche, Clément Salemme, Romeo Kabil, Alexandre Hadj-Bouziane, Fadila Farnè, Alessandro |
author_facet | Blini, Elvio Desoche, Clément Salemme, Romeo Kabil, Alexandre Hadj-Bouziane, Fadila Farnè, Alessandro |
author_sort | Blini, Elvio |
collection | PubMed |
description | Closer objects are invariably perceived as bigger than farther ones and are therefore easier to detect and discriminate. This is so deeply grounded in our daily experience that no question has been raised as to whether the advantage for near objects depends on other features (e.g., depth itself). In a series of five experiments (N = 114), we exploited immersive virtual environments and visual illusions (i.e., Ponzo) to probe humans’ perceptual abilities in depth and, specifically, in the space closely surrounding our body, termed peripersonal space. We reversed the natural distance scaling of size in favor of the farther object, which thus appeared bigger, to demonstrate a persistent shape-discrimination advantage for close objects. Psychophysical modeling further suggested a sigmoidal trend for this benefit, mirroring that found for multisensory estimates of peripersonal space. We argue that depth is a fundamental, yet overlooked, dimension of human perception and that future studies in vision and perception should be depth aware. |
format | Online Article Text |
id | pubmed-6238160 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | SAGE Publications |
record_format | MEDLINE/PubMed |
spelling | pubmed-62381602018-12-10 Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal Space Blini, Elvio Desoche, Clément Salemme, Romeo Kabil, Alexandre Hadj-Bouziane, Fadila Farnè, Alessandro Psychol Sci Research Articles Closer objects are invariably perceived as bigger than farther ones and are therefore easier to detect and discriminate. This is so deeply grounded in our daily experience that no question has been raised as to whether the advantage for near objects depends on other features (e.g., depth itself). In a series of five experiments (N = 114), we exploited immersive virtual environments and visual illusions (i.e., Ponzo) to probe humans’ perceptual abilities in depth and, specifically, in the space closely surrounding our body, termed peripersonal space. We reversed the natural distance scaling of size in favor of the farther object, which thus appeared bigger, to demonstrate a persistent shape-discrimination advantage for close objects. Psychophysical modeling further suggested a sigmoidal trend for this benefit, mirroring that found for multisensory estimates of peripersonal space. We argue that depth is a fundamental, yet overlooked, dimension of human perception and that future studies in vision and perception should be depth aware. SAGE Publications 2018-10-04 2018-11 /pmc/articles/PMC6238160/ /pubmed/30285541 http://dx.doi.org/10.1177/0956797618795679 Text en © The Author(s) 2018 http://creativecommons.org/licenses/by/4.0/ This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://www.creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage). |
spellingShingle | Research Articles Blini, Elvio Desoche, Clément Salemme, Romeo Kabil, Alexandre Hadj-Bouziane, Fadila Farnè, Alessandro Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal Space |
title | Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal
Space |
title_full | Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal
Space |
title_fullStr | Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal
Space |
title_full_unstemmed | Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal
Space |
title_short | Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal
Space |
title_sort | mind the depth: visual perception of shapes is better in peripersonal
space |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6238160/ https://www.ncbi.nlm.nih.gov/pubmed/30285541 http://dx.doi.org/10.1177/0956797618795679 |
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