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| Research article summary (published 29 Jun 2003): |
The "ticktock" of our internal clock: direct brain evidence of subjective accents in isochronous sequences.
Full Abstract
The phenomenon commonly known as subjective accenting refers to the fact that identical sound events within purely isochronous sequences are perceived as unequal. Although subjective accenting has been extensively explored using behavioral methods, no physiological evidence has ever been provided for it. In the present study, we tested the notion that these perceived irregularities are related to the dynamic deployment of attention. We disrupted listeners' expectancies in different positions of auditory equitone sequences and measured their responses through brain event-related potentials (ERPs). Significant differences in a late parietal (P3-like) ERP component were found between the responses elicited on odd-numbered versus even-numbered positions, suggesting that a default binary metric structure was perceived. Our findings indicate that this phenomenon has a rather cognitive, attention-dependent origin, partly affected by musical expertise.
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Author information
Author/s: Brochard, Renaud (R); Abecasis, Donna (D); Potter, Doug (D); Ragot, Richard (R); Drake, Carolyn (C);
Affiliation: Laboratoire d'Etude des Apprentissages et du Développement, CNRS UMR 5022, Université de Bourgogne, Dijon, France. renaud.brochard(-atsign-)u-bourgogne.fr
Journal and publication information
Publication Type: Journal Article
Journal: Psychological science : a journal of the American Psychological Society / APS (Psychol Sci), published in United States. (Language: eng)
Reference: 2003-Jul; vol 14 (issue 4) : pp 362-6
Dates: Created 2003/06/16; Completed 2003/09/29; Revised 2004/11/17;
PMID: 12807411, 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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