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12-11-2018 | Original Article

Short-term upper-limb immobilization alters peripersonal space representation

Auteurs: Lucette Toussaint, Yannick Wamain, Christel Bidet-Ildei, Yann Coello

Gepubliceerd in: Psychological Research | Uitgave 4/2020

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Abstract

Peripersonal space is a multisensory interface between the environment and the body subserving motor interactions with the physical and social world. Although changing body properties has been shown to alter the functional processing of space, little is known about the effect of short-term limb immobilization specifically on the motor representation of peripersonal space. In the present study, we investigated the effect of a right upper-limb immobilization for a duration of 24 h on a reachability judgment task and a brightness judgment task. Analyses of perceptual thresholds revealed a reduction of peripersonal space representation after the immobilization period, which was not observed when there was no immobilization (control group). In contrast, no variation appeared in the brightness judgment task, suggesting no presence of specific visual perception or decisional deficits in the limb immobilization group. Considered together, the results confirm the crucial role of the motor system in the representation of peripersonal space. They also highlight the plasticity of the motor system resulting in a rapid change of its activity following limb immobilization, with a concomitant effect on motor-related perceptual and cognitive processes.
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Metagegevens
Titel
Short-term upper-limb immobilization alters peripersonal space representation
Auteurs
Lucette Toussaint
Yannick Wamain
Christel Bidet-Ildei
Yann Coello
Publicatiedatum
12-11-2018
Uitgeverij
Springer Berlin Heidelberg
Gepubliceerd in
Psychological Research / Uitgave 4/2020
Print ISSN: 0340-0727
Elektronisch ISSN: 1430-2772
DOI
https://doi.org/10.1007/s00426-018-1118-0