Journal
NEUROSCIENCES AND MUSIC III: DISORDERS AND PLASTICITY
Volume 1169, Issue -, Pages 89-92Publisher
BLACKWELL PUBLISHING
DOI: 10.1111/j.1749-6632.2009.04779.x
Keywords
neural oscillation; magnetoencephalography; event-related desynchronization (ERD); musical beat; auditory-motor interaction
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Funding
- Canadian Institutes of Health Research
- Canada Foundation for Innovation
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We examined beta- (similar to 20 Hz) and gamma- (similar to 40 Hz) band activity in auditory cortices by means of magnetoencephalography (MEG) during passive listening to a regular musical beat with occasional omission of single tones. The beta activity decreased after each tone, followed by an increase, thus forming a periodic modulation synchronized with the stimulus. The beta decrease was absent after omissions. In contrast, gamma-band activity showed a peak after tone and omission, suggesting underlying endogenous anticipatory processes. We propose that auditory beta and gamma oscillations have different roles in musical beat encoding and auditory-motor interaction.
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