Automatic imitation in rhythmical actions: kinematic fidelity and the effects of compatibility, delay, and visual monitoring

Hdl Handle:
http://hdl.handle.net/10149/250232
Title:
Automatic imitation in rhythmical actions: kinematic fidelity and the effects of compatibility, delay, and visual monitoring
Authors:
Eaves, D. L. (Daniel); Turgeon, M. (Martine); Vogt, S. (Stefan); Boraud, T. (Thomas)
Affiliation:
Teesside University; Lancaster University,Centre for Research in Human Development and Learning.
Citation:
Eaves, D.L., Turgeon, M. and Vogt, S. (2012) 'Automatic imitation in rhythmical actions: kinematic fidelity and the effects of compatibility, delay, and visual monitoring, PLoS ONE 7(10), e46728.
Publisher:
Public Library of Science
Journal:
PLoS ONE
Issue Date:
5-Oct-2012
URI:
http://hdl.handle.net/10149/250232
DOI:
10.1371/journal.pone.0046728
Additional Links:
http://dx.plos.org/10.1371/journal.pone.0046728
Abstract:
We demonstrate that observation of everyday rhythmical actions biases subsequent motor execution of the same and of different actions, using a paradigm where the observed actions were irrelevant for action execution. The cycle time of the distractor actions was subtly manipulated across trials, and the cycle time of motor responses served as the main dependent measure. Although distractor frequencies reliably biased response cycle times, this imitation bias was only a small fraction of the modulations in distractor speed, as well as of the modulations produced when participants intentionally imitated the observed rhythms. Importantly, this bias was not only present for compatible actions, but was also found, though numerically reduced, when distractor and executed actions were different (e.g., tooth brushing vs. window wiping), or when the dominant plane of movement was different (horizontal vs. vertical). In addition, these effects were equally pronounced for execution at 0, 4, and 8 s after action observation, a finding that contrasts with the more short-lived effects reported in earlier studies. The imitation bias was also unaffected when vision of the hand was occluded during execution, indicating that this effect most likely resulted from visuomotor interactions during distractor observation, rather than from visual monitoring and guidance during execution. Finally, when the distractor was incompatible in both dimensions (action type and plane) the imitation bias was not reduced further, in an additive way, relative to the single-incompatible conditions. This points to a mechanism whereby the observed action's impact on motor processing is generally reduced whenever this is not useful for motor planning. We interpret these findings in the framework of biased competition, where intended and distractor actions can be represented as competing and quasi-encapsulated sensorimotor streams. © 2012 Eaves et al.
Type:
Article
Language:
en
Keywords:
rhythmical actions; distractor action
ISSN:
1932-6203
EISSN:
1932-6203
Rights:
Author can archive publisher's version/PDF. For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 25/10/2012].
Citation Count:
0 [Scopus, 25/10/2012]

Full metadata record

DC FieldValue Language
dc.contributor.authorEaves, D. L. (Daniel)en_GB
dc.contributor.authorTurgeon, M. (Martine)en_GB
dc.contributor.authorVogt, S. (Stefan)en_GB
dc.contributor.authorBoraud, T. (Thomas)en_GB
dc.date.accessioned2012-10-25T09:08:52Z-
dc.date.available2012-10-25T09:08:52Z-
dc.date.issued2012-10-05-
dc.identifier.citationPLoS ONE; 7 (10): e46728en_GB
dc.identifier.issn1932-6203-
dc.identifier.doi10.1371/journal.pone.0046728-
dc.identifier.urihttp://hdl.handle.net/10149/250232-
dc.description.abstractWe demonstrate that observation of everyday rhythmical actions biases subsequent motor execution of the same and of different actions, using a paradigm where the observed actions were irrelevant for action execution. The cycle time of the distractor actions was subtly manipulated across trials, and the cycle time of motor responses served as the main dependent measure. Although distractor frequencies reliably biased response cycle times, this imitation bias was only a small fraction of the modulations in distractor speed, as well as of the modulations produced when participants intentionally imitated the observed rhythms. Importantly, this bias was not only present for compatible actions, but was also found, though numerically reduced, when distractor and executed actions were different (e.g., tooth brushing vs. window wiping), or when the dominant plane of movement was different (horizontal vs. vertical). In addition, these effects were equally pronounced for execution at 0, 4, and 8 s after action observation, a finding that contrasts with the more short-lived effects reported in earlier studies. The imitation bias was also unaffected when vision of the hand was occluded during execution, indicating that this effect most likely resulted from visuomotor interactions during distractor observation, rather than from visual monitoring and guidance during execution. Finally, when the distractor was incompatible in both dimensions (action type and plane) the imitation bias was not reduced further, in an additive way, relative to the single-incompatible conditions. This points to a mechanism whereby the observed action's impact on motor processing is generally reduced whenever this is not useful for motor planning. We interpret these findings in the framework of biased competition, where intended and distractor actions can be represented as competing and quasi-encapsulated sensorimotor streams. © 2012 Eaves et al.en_GB
dc.language.isoenen
dc.publisherPublic Library of Scienceen_GB
dc.relation.urlhttp://dx.plos.org/10.1371/journal.pone.0046728en_GB
dc.rightsAuthor can archive publisher's version/PDF. For full details see http://www.sherpa.ac.uk/romeo/ [Accessed 25/10/2012].en_GB
dc.subjectrhythmical actionsen_GB
dc.subjectdistractor actionen_GB
dc.titleAutomatic imitation in rhythmical actions: kinematic fidelity and the effects of compatibility, delay, and visual monitoringen
dc.typeArticleen
dc.identifier.eissn1932-6203-
dc.contributor.departmentTeesside University; Lancaster University,Centre for Research in Human Development and Learning.en_GB
dc.identifier.journalPLoS ONEen_GB
ref.citationcount0 [Scopus, 25/10/2012]en_GB
or.citation.harvardEaves, D.L., Turgeon, M. and Vogt, S. (2012) 'Automatic imitation in rhythmical actions: kinematic fidelity and the effects of compatibility, delay, and visual monitoring, PLoS ONE 7(10), e46728.en_GB
All Items in TeesRep are protected by copyright, with all rights reserved, unless otherwise indicated.