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| Research article summary (published 30 Dec 2002): |
Grasp observation influences speech production.
Full Abstract
Subjects pronounced either the syllable 'BA' or 'GA' while observing motor acts of hand grasp directed to objects of two sizes (experiment 1). Kinematics of lip aperture and amplitude spectrum of voice were influenced by the observation of the different grasp kinematics depending on the size of the target objects. Specifically, both lip aperture and voice peak amplitude were greater when the observed hand grasp was directed to the large object. Two control experiments ruled out that the different arm velocity when reaching objects varying in size (experiment 2), and overt visual analysis of the target-object (experiment 3), affected lip movement and voice emission. Results provide behavioural evidence in favour of the hypothesis that the system involved in observation (and preparation) of grasp movements partially shares the cortical areas involved in speech production.
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Author information
Author/s: Gentilucci, Maurizio (M);
Affiliation: Istituto di Fisiologia Umana, Via Volturno 39, I-43100, Parma, Italy. gentiluc@unipr.it
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-Jan; vol 17 (issue 1) : pp 179-84
Dates: Created 2003/01/21; Completed 2003/04/28; Revised 2006/11/15;
PMID: 12534983, 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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