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Brain Advance Access originally published online on September 7, 2006
Brain 2006 129(10):2593-2608; doi:10.1093/brain/awl247
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
The online version of this article has been published under an open access model. Users are entitled to use, reproduce, disseminate, or display the open access version of this article for non-commercial purposes provided that: the original authorship is properly and fully attributed; the Journal and Oxford University Press are attributed as the original place of publication with the correct citation details given; if an article is subsequently reproduced or disseminated not in its entirety but only in part or as a derivative work this must be clearly indicated. For commercial re-use, please contact journals.permissions@oxfordjournals.org

One year of musical training affects development of auditory cortical-evoked fields in young children

Takako Fujioka1,3, Bernhard Ross1, Ryusuke Kakigi3, Christo Pantev4 and Laurel J. Trainor1,2

1 Rotman Research Institute, Baycrest, University of Toronto Toronto, Canada 2 Department of Psychology, Neuroscience and Behaviour, McMaster University Hamilton, Canada 3 Department of Integrative Physiology, National Institute for Physiological Sciences Okazaki, Japan 4 Institute for Biomagnetism and Biosignal analysis, University of Münster, Münster Germany

Correspondence to: Takako Fujioka, PhD, Rotman Research Institute, 3560 Bathurst Street, Toronto, Ontario, M6A 2E1, Canada E-mail: tfujioka{at}rotman-baycrest.on.ca

Auditory evoked responses to a violin tone and a noise-burst stimulus were recorded from 4- to 6-year-old children in four repeated measurements over a 1-year period using magnetoencephalography (MEG). Half of the subjects participated in musical lessons throughout the year; the other half had no music lessons. Auditory evoked magnetic fields showed prominent bilateral P100m, N250m, P320m and N450m peaks. Significant change in the peak latencies of all components except P100m was observed over time. Larger P100m and N450m amplitude as well as more rapid change of N250m amplitude and latency was associated with the violin rather than the noise stimuli. Larger P100m and P320m peak amplitudes in the left hemisphere than in the right are consistent with left-lateralized cortical development in this age group. A clear musical training effect was expressed in a larger and earlier N250m peak in the left hemisphere in response to the violin sound in musically trained children compared with untrained children. This difference coincided with pronounced morphological change in a time window between 100 and 400 ms, which was observed in musically trained children in response to violin stimuli only, whereas in untrained children a similar change was present regardless of stimulus type. This transition could be related to establishing a neural network associated with sound categorization and/or involuntary attention, which can be altered by music learning experience.

Key Words: maturation; cortical plasticity; auditory cortex; musical training; magnetoencephalography

Abbreviations: AEF, auditory evoked magnetic field; AEP, auditory evoked potential; CI, confidence interval; MEG, magnetoencephalography; SEM, standard error of the mean

Received July 3, 2006. Revised August 10, 2006. Accepted August 11, 2006.


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[Abstract] [PDF]


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