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| Research article summary (published 27 Feb 2003): |
The integration of cortical and behavioural dynamics during initial learning of a motor task.
Full Abstract
Here we test the hypothesis that frequency and topographically specific changes in the strength of functional cortico-cortical coupling occur during the acquisition of a completely new task. To this end we studied the behavioural and cortical dynamics of a bimanual multifrequency coordination pattern during which one hand moved at twice the frequency of the other hand. This pattern represents a noninherent assignment and necessitates training before appropriate interlimb decoupling takes place. Results showed that acquisition of the multifrequency task was associated with an improved behavioural output that matched specific changes in the electroencephalogram dynamics. In particular, practice of the coordination pattern was accompanied by a decrease in coherence between the primary sensorimotor regions, and over the midline area in the alpha and beta bands, respectively, along with an increase in functional interhemispheric coupling between the prefrontal areas in the gamma band. These data suggest that the strength of cortico-cortical connectivity is adaptively modified across regions and across frequencies during early learning as the functional couplings are created and optimized for the purpose of movement execution.
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Author information
Author/s: Serrien, Deborah J (DJ); Brown, Peter (P);
Affiliation: Sobell Department of Motor Neuroscience and Movement Disorders (Box 146), Institute of Neurology, Queen Square, London WC1N 3BG, UK. d.serrien(-atsign-)ion.ucl.ac.uk
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: The European journal of neuroscience (Eur J Neurosci), published in France. (Language: eng)
Reference: 2003-Mar; vol 17 (issue 5) : pp 1098-104
Dates: Created 2003/03/25; Completed 2003/05/15; Revised 2006/11/15;
PMID: 12653986, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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