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The Magic Grasp: Motor Expertise in Deception
BACKGROUND: Most of us are poor at faking actions. Kinematic studies have shown that when pretending to pick up imagined objects (pantomimed actions), we move and shape our hands quite differently from when grasping real ones. These differences between real and pantomimed actions have been linked to...
Autores principales: | , , , |
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Formato: | Texto |
Lenguaje: | English |
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Public Library of Science
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036651/ https://www.ncbi.nlm.nih.gov/pubmed/21347416 http://dx.doi.org/10.1371/journal.pone.0016568 |
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author | Cavina-Pratesi, Cristiana Kuhn, Gustav Ietswaart, Magdalena Milner, A. David |
author_facet | Cavina-Pratesi, Cristiana Kuhn, Gustav Ietswaart, Magdalena Milner, A. David |
author_sort | Cavina-Pratesi, Cristiana |
collection | PubMed |
description | BACKGROUND: Most of us are poor at faking actions. Kinematic studies have shown that when pretending to pick up imagined objects (pantomimed actions), we move and shape our hands quite differently from when grasping real ones. These differences between real and pantomimed actions have been linked to separate brain pathways specialized for different kinds of visuomotor guidance. Yet professional magicians regularly use pantomimed actions to deceive audiences. METHODOLOGY AND PRINCIPAL FINDINGS: In this study, we tested whether, despite their skill, magicians might still show kinematic differences between grasping actions made toward real versus imagined objects. We found that their pantomimed actions in fact closely resembled real grasps when the object was visible (but displaced) (Experiment 1), but failed to do so when the object was absent (Experiment 2). CONCLUSIONS AND SIGNIFICANCE: We suggest that although the occipito-parietal visuomotor system in the dorsal stream is designed to guide goal-directed actions, prolonged practice may enable it to calibrate actions based on visual inputs displaced from the action. |
format | Text |
id | pubmed-3036651 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-30366512011-02-23 The Magic Grasp: Motor Expertise in Deception Cavina-Pratesi, Cristiana Kuhn, Gustav Ietswaart, Magdalena Milner, A. David PLoS One Research Article BACKGROUND: Most of us are poor at faking actions. Kinematic studies have shown that when pretending to pick up imagined objects (pantomimed actions), we move and shape our hands quite differently from when grasping real ones. These differences between real and pantomimed actions have been linked to separate brain pathways specialized for different kinds of visuomotor guidance. Yet professional magicians regularly use pantomimed actions to deceive audiences. METHODOLOGY AND PRINCIPAL FINDINGS: In this study, we tested whether, despite their skill, magicians might still show kinematic differences between grasping actions made toward real versus imagined objects. We found that their pantomimed actions in fact closely resembled real grasps when the object was visible (but displaced) (Experiment 1), but failed to do so when the object was absent (Experiment 2). CONCLUSIONS AND SIGNIFICANCE: We suggest that although the occipito-parietal visuomotor system in the dorsal stream is designed to guide goal-directed actions, prolonged practice may enable it to calibrate actions based on visual inputs displaced from the action. Public Library of Science 2011-02-09 /pmc/articles/PMC3036651/ /pubmed/21347416 http://dx.doi.org/10.1371/journal.pone.0016568 Text en Cavina-Pratesi 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, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Cavina-Pratesi, Cristiana Kuhn, Gustav Ietswaart, Magdalena Milner, A. David The Magic Grasp: Motor Expertise in Deception |
title | The Magic Grasp: Motor Expertise in Deception |
title_full | The Magic Grasp: Motor Expertise in Deception |
title_fullStr | The Magic Grasp: Motor Expertise in Deception |
title_full_unstemmed | The Magic Grasp: Motor Expertise in Deception |
title_short | The Magic Grasp: Motor Expertise in Deception |
title_sort | magic grasp: motor expertise in deception |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3036651/ https://www.ncbi.nlm.nih.gov/pubmed/21347416 http://dx.doi.org/10.1371/journal.pone.0016568 |
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