The "ticktock" of our internal clock: Direct brain evidence of subjective accents in isochronous sequences

被引:161
作者
Brochard, R
Abecasis, D
Potter, D
Ragot, R
Drake, C
机构
[1] Univ Bourgogne, CNRS, UMR 5022, Lab Etud Apprentissages & Dev, F-21065 Dijon, France
[2] Keele Univ, Dept Psychol, Unit Study Mus Skill & Dev, Keele, Staffs, England
[3] Univ Paris 05, Inst Psychol, CNRS,UMR 8581, Expt Psychol Lab, Boulogne, France
[4] Univ Dundee, Dept Psychol, Dundee DD1 4HN, Scotland
[5] Hop La Pitie Salpetriere, CNRS, UPR 640, LENA, Paris, France
关键词
D O I
10.1111/1467-9280.24441
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
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.
引用
收藏
页码:362 / 366
页数:5
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