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| Research article summary (published 29 Apr 2009): |
Repetitive transcranial magnetic stimulation to the primary motor cortex interferes with motor learning by observing.
Full Abstract
Neural representations of novel motor skills can be acquired through visual observation. We used repetitive transcranial magnetic stimulation (rTMS) to test the idea that this "motor learning by observing" is based on engagement of neural processes for learning in the primary motor cortex (M1). Human subjects who observed another person learning to reach in a novel force environment imposed by a robot arm performed better when later tested in the same environment than subjects who observed movements in a different environment. rTMS applied to M1 after observation reduced the beneficial effect of observing congruent forces, and eliminated the detrimental effect of observing incongruent forces. Stimulation of a control site in the frontal cortex had no effect on reaching. Our findings represent the first direct evidence that neural representations of motor skills in M1, a cortical region whose role has been firmly established for active motor learning, also underlie motor learning by observing.
Author information
Author/s: Brown, Liana E (LE); Wilson, Elizabeth T (ET); Gribble, Paul L (PL);
Affiliation: Department of Psychology, Trent University, Peterborough, Ontario, Canada. lianabrown(-atsign-)trentu.ca
Journal and publication information
Publication Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't
Journal: Journal of cognitive neuroscience (J Cogn Neurosci), published in United States. (Language: eng)
Reference: 2009-May; vol 21 (issue 5) : pp 1013-22
Dates: Created 2009/04/09; Completed 2009/06/04;
PMID: 18702578, status: MEDLINE (last retrieval date: 6/4/2009, IMS Date: 04 Jun 2009 00:00:00)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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