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  Agency in the sensorimotor system and its relation to explicit action awareness

Weiss, C., Tsakiris, M., Haggard, P., & Schütz-Bosbach, S. (2014). Agency in the sensorimotor system and its relation to explicit action awareness. Neuropsychologia, 52, 82-92. doi:10.1016/j.neuropsychologia.2013.09.034.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-5587-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-81FE-D
Genre: Journal Article

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 Creators:
Weiss, Carmen1, Author              
Tsakiris, Manos2, Author
Haggard, Patrick3, Author
Schütz-Bosbach, Simone1, Author              
Affiliations:
1Max Planck Research Group Body and Self, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634554              
2Department of Psychology, Royal Holloway University of London, United Kingdom, ou_persistent22              
3Institute of Cognitive Neuroscience, University College London, United Kingdom, ou_persistent22              

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Free keywords: Action awareness; Action observation; Agency; Corticospinal excitability; Human motor system
 Abstract: People generally have a strong and immediate intuition whether they are the author of an action or not. Nevertheless, recent psychological studies focused on situations of ambiguous agency. These studies concluded that agency is an inference rather than a direct perception, and is, at least sometimes, illusory. Moreover, shared representations of executed and merely observed actions within the sensorimotor system pose a challenge to the idea that a sense of agency can be grounded within that system. Here, we sought to investigate whether the human motor system is indeed sensitive to whether observed actions are linked to agency or not. In addition, we investigated whether the mere observation of an action has comparable effects on low-level, sensorimotor measures of agency, and on high-level, explicit representations of agency. To this end, we instructed participants to make simple manual movements, and manipulated the temporal correspondence between the movement that they made and the movement that they observed. Motor-evoked potentials to single-pulse TMS were taken as a low-level, sensorimotor measure of agency. To assess explicit representations of agency, participants verbally judged whether or not the observed movement temporally corresponded to the movement they executed. The results showed that corticospinal excitability varied with the degree of temporal correspondence of the executed and observed movements. Moreover, explicit agency judgments could be predicted from corticospinal excitability. This suggests that explicit judgments of agency could be directly based on information within the sensorimotor system.

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Language(s): eng - English
 Dates: 2013-092013-10-012014-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.neuropsychologia.2013.09.034
PMID: 24096174
Other: Epub 2013
 Degree: -

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Title: Neuropsychologia
Source Genre: Journal
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Publ. Info: Oxford : Pergamon
Pages: - Volume / Issue: 52 Sequence Number: - Start / End Page: 82 - 92 Identifier: ISSN: 0028-3932
CoNE: https://pure.mpg.de/cone/journals/resource/954925428258