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| Research article summary (published 30 Dec 2002): |
Modulation of motor cortex excitability in the left hemisphere during action observation: a single- and paired-pulse transcranial magnetic stimulation study of self- and non-self-action observation.
Full Abstract
Motor system excitability was tested by transcranial magnetic stimulation (TMS), and F-wave and H-reflex evaluation in different action observation tasks. Our aim was to investigate the effects produced by self- versus non-self-hand movement observation (MO). No significant differences were found between the self- and non-self-conditions. Movement observation significantly modulated motor cortex excitability, producing an increase in the amplitude of motor evoked potentials (MEPs) with a single magnetic pulse and a reduction in intracortical inhibition (ICI) with paired-pulse stimulation. No significant changes were found in motor cortex excitability during the observation of geometric objects. Motor imagery produced similar effects to those of action observation; no significant differences in modulation of motor system excitability between motor imagery and action observation were found in those muscles involved in actual motor execution. No significant effect on spinal excitability was found in any of the test conditions.
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Author information
Author/s: Patuzzo, Simone (S); Fiaschi, Antonio (A); Manganotti, Paolo (P);
Affiliation: Dipartimento di Scienze Neurologiche e della Visione, Sezione di Neurologia, Servizio di Neurologia ad Indirizzo Riabilitativo, University of Verona, 37134, Verona, Italy. ft.patsim(-atsign-)tiscali.it
Journal and publication information
Publication Type: Comparative Study; Journal Article
Journal: Neuropsychologia (Neuropsychologia), published in England. (Language: eng)
Reference: 2003-; vol 41 (issue 9) : pp 1272-8
Dates: Created 2003/05/19; Completed 2003/08/21; Revised 2006/11/15;
PMID: 12753966, 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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