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Introspecting on the Timing of One's Actions in a Visuo-Motor Synchronization Task

By means of a new visuo-motor synchronization paradigm we test the frequently made proposition that one's feeling of having voluntarily made a decision to act is in fact postdictively established contingent on the outcome of his action rather than on its aim. Subjects had to (1) synchronize a k...

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Autores principales: Gorea, Andrei, Rider, Delphine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Research Foundation 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3108554/
https://www.ncbi.nlm.nih.gov/pubmed/21687465
http://dx.doi.org/10.3389/fpsyg.2011.00106
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author Gorea, Andrei
Rider, Delphine
author_facet Gorea, Andrei
Rider, Delphine
author_sort Gorea, Andrei
collection PubMed
description By means of a new visuo-motor synchronization paradigm we test the frequently made proposition that one's feeling of having voluntarily made a decision to act is in fact postdictively established contingent on the outcome of his action rather than on its aim. Subjects had to (1) synchronize a key-press with the end of a random synchronization interval (SI) shorter or longer than their reaction time (RT) and (2) judge thereafter whether (Q1) SI had been long enough to allow synchronization, (Q2) their motor response had been “reactive” (i.e., close to their RT) or delayed, or (Q3) whether SI was short or long. SI was denoted by the filling-up time of an annular “gauge.” In principle, the “synchronization” key-press should be reactive for SI ≤ RT and delayed in proportion with SI for SI > RT. Instead, response time distributions were bimodal for the shortest (0 ms) and longest (500 ms) SIs and widely spread for intermediate SIs. To all three questions asked, subjects’ responses strongly correlated with SI itself (r = 0.62−0.76) and barely with their actual response times (r = 0.03−0.42). Hence subjects’ introspective judgments on their trial-by-trial potential capability to synchronize their motor response (Q1) and on their reactive vs. delayed response mode reflected the objective cause of their action rather than being “corrupted” by its outcome (namely their actual response time). That subjects could not reliably decide whether their motor response was reactive or delayed implies that they did not have retrospective access to (or did not remember) their motor decisions which amounts to say that they could not decide on the intentionality of their actions.
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spelling pubmed-31085542011-06-16 Introspecting on the Timing of One's Actions in a Visuo-Motor Synchronization Task Gorea, Andrei Rider, Delphine Front Psychol Psychology By means of a new visuo-motor synchronization paradigm we test the frequently made proposition that one's feeling of having voluntarily made a decision to act is in fact postdictively established contingent on the outcome of his action rather than on its aim. Subjects had to (1) synchronize a key-press with the end of a random synchronization interval (SI) shorter or longer than their reaction time (RT) and (2) judge thereafter whether (Q1) SI had been long enough to allow synchronization, (Q2) their motor response had been “reactive” (i.e., close to their RT) or delayed, or (Q3) whether SI was short or long. SI was denoted by the filling-up time of an annular “gauge.” In principle, the “synchronization” key-press should be reactive for SI ≤ RT and delayed in proportion with SI for SI > RT. Instead, response time distributions were bimodal for the shortest (0 ms) and longest (500 ms) SIs and widely spread for intermediate SIs. To all three questions asked, subjects’ responses strongly correlated with SI itself (r = 0.62−0.76) and barely with their actual response times (r = 0.03−0.42). Hence subjects’ introspective judgments on their trial-by-trial potential capability to synchronize their motor response (Q1) and on their reactive vs. delayed response mode reflected the objective cause of their action rather than being “corrupted” by its outcome (namely their actual response time). That subjects could not reliably decide whether their motor response was reactive or delayed implies that they did not have retrospective access to (or did not remember) their motor decisions which amounts to say that they could not decide on the intentionality of their actions. Frontiers Research Foundation 2011-05-27 /pmc/articles/PMC3108554/ /pubmed/21687465 http://dx.doi.org/10.3389/fpsyg.2011.00106 Text en Copyright © 2011 Gorea and Rider. http://www.frontiersin.org/licenseagreement This is an open-access article subject to a non-exclusive license between the authors and Frontiers Media SA, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and other Frontiers conditions are complied with.
spellingShingle Psychology
Gorea, Andrei
Rider, Delphine
Introspecting on the Timing of One's Actions in a Visuo-Motor Synchronization Task
title Introspecting on the Timing of One's Actions in a Visuo-Motor Synchronization Task
title_full Introspecting on the Timing of One's Actions in a Visuo-Motor Synchronization Task
title_fullStr Introspecting on the Timing of One's Actions in a Visuo-Motor Synchronization Task
title_full_unstemmed Introspecting on the Timing of One's Actions in a Visuo-Motor Synchronization Task
title_short Introspecting on the Timing of One's Actions in a Visuo-Motor Synchronization Task
title_sort introspecting on the timing of one's actions in a visuo-motor synchronization task
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3108554/
https://www.ncbi.nlm.nih.gov/pubmed/21687465
http://dx.doi.org/10.3389/fpsyg.2011.00106
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