Proprioceptive body illusions modulate the visual perception of reaching distance

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The neurobiology of reaching has been extensively studied in human and non-human pri- mates. However, the mechanisms that allow a subject to decide—without engaging in explicit action—whether an object is reachable are not fully understood. Some studies con- clude that decisions near the reach limit...

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Autores principales: Petroni, Agustín, Carbajal, M. Julia, Sigman, Mariano
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2018
Materias:
Neuropsicología
Toma de decisiones
Percepción de distancia
Vision
Triceps
Reaction time
Musculosketal system
Primates
Proprioception
Hands
Acceso en línea:https://doi.org/10.1371/journal.pone.0131087
https://repositorio.utdt.edu/handle/20.500.13098/11071
Aporte de:
Repositorio Digital Universidad Torcuato Di Tella de Universidad Torcuato Di Tella
id I57-R16320.500.13098-11071
record_format dspace
institution Universidad Torcuato Di Tella
institution_str I-57
repository_str R-163
collection Repositorio Digital Universidad Torcuato Di Tella
language Inglés
orig_language_str_mv eng
topic Neuropsicología
Toma de decisiones
Percepción de distancia
Vision
Triceps
Reaction time
Musculosketal system
Primates
Proprioception
Hands
spellingShingle Neuropsicología
Toma de decisiones
Percepción de distancia
Vision
Triceps
Reaction time
Musculosketal system
Primates
Proprioception
Hands
Petroni, Agustín
Carbajal, M. Julia
Sigman, Mariano
Proprioceptive body illusions modulate the visual perception of reaching distance
description The neurobiology of reaching has been extensively studied in human and non-human pri- mates. However, the mechanisms that allow a subject to decide—without engaging in explicit action—whether an object is reachable are not fully understood. Some studies con- clude that decisions near the reach limit depend on motor simulations of the reaching move- ment. Others have shown that the body schema plays a role in explicit and implicit distance estimation, especially after motor practice with a tool. In this study we evaluate the causal role of multisensory body representations in the perception of reachable space. We rea- soned that if body schema is used to estimate reach, an illusion of the finger size induced by proprioceptive stimulation should propagate to the perception of reaching distances. To test this hypothesis we induced a proprioceptive illusion of extension or shrinkage of the right index finger while participants judged a series of LEDs as reachable or non-reachable with- out actual movement. Our results show that reach distance estimation depends on the illu- sory perceived size of the finger: illusory elongation produced a shift of reaching distance away from the body whereas illusory shrinkage produced the opposite effect. Combining these results with previous findings, we suggest that deciding if a target is reachable requires an integration of body inputs in high order multisensory parietal areas that engage in movement simulations through connections with frontal premotor areas.
format Artículo
publishedVersion
author Petroni, Agustín
Carbajal, M. Julia
Sigman, Mariano
author_facet Petroni, Agustín
Carbajal, M. Julia
Sigman, Mariano
author_sort Petroni, Agustín
title Proprioceptive body illusions modulate the visual perception of reaching distance
title_short Proprioceptive body illusions modulate the visual perception of reaching distance
title_full Proprioceptive body illusions modulate the visual perception of reaching distance
title_fullStr Proprioceptive body illusions modulate the visual perception of reaching distance
title_full_unstemmed Proprioceptive body illusions modulate the visual perception of reaching distance
title_sort proprioceptive body illusions modulate the visual perception of reaching distance
publishDate 2018
url https://doi.org/10.1371/journal.pone.0131087
https://repositorio.utdt.edu/handle/20.500.13098/11071
work_keys_str_mv AT petroniagustin proprioceptivebodyillusionsmodulatethevisualperceptionofreachingdistance
AT carbajalmjulia proprioceptivebodyillusionsmodulatethevisualperceptionofreachingdistance
AT sigmanmariano proprioceptivebodyillusionsmodulatethevisualperceptionofreachingdistance
bdutipo_str Repositorios
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