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| Research article summary (published 30 May 2002): |
Auditory training induces asymmetrical changes in cortical neural activity.
Full Abstract
Pre-attentive cortical evoked potentials reflect training-induced changes in neural activity associated with speech-sound training. Seven normal-hearing young adults were trained to identify two synthetic speech variants of the syllable /ba/. As subjects learned to correctly identify the two stimuli, changes in P1, N1, and P2 amplitudes were observed. Of particular interest is that P1, N1, and P2 components of the N1-P2 complex responded differently to listening training. That is, significant changes in P1 and N1 amplitude were recorded over the right but not the left hemisphere. In contrast, increases in P2 were observed bilaterally. These results indicate that training-related changes in neural activity are reflected in far-field aggregate neural responses and that distinct patterns of neural change, perhaps reflecting hemispheric specialization, likely represent different aspects of auditory function.
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Author information
Author/s: Tremblay, Kelly L (KL); Kraus, Nina (N);
Affiliation: Department of Speech and Hearing Sciences, University of Washington, Seattle 98105, USA. tremblay@u.washington.edu
Grants: DC01510 (Agency:United States NIDCD)
Journal and publication information
Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S.
Journal: Journal of speech, language, and hearing research : JSLHR (J Speech Lang Hear Res), published in United States. (Language: eng)
Reference: 2002-Jun; vol 45 (issue 3) : pp 564-72
Dates: Created 2002/06/18; Completed 2002/12/12; Revised 2007/11/14;
PMID: 12069008, 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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