Presentation 2015-03-17
MEG responses to rhythm deviation in tone sequence
Yuya TAKESHITA, Natsuki TAMURA, Koichi YOKOSAWA,
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Abstract(in English) We had found that characteristic brain activities responding to rhythm variation in music by using magnetoencephalography (MEG). In this study, we investigated whether the brain activities are observed even in simple tone sequences or not. In the experiment, we utilized auditory stimuli consisting of pure tone sequence with 456 ms duration. The tone sequence also included rhythm deviations, with 228 ms and 684 ms durations. Every tone faded-out in 114 ms. Prominent MEG peaks were observed at the offset time of tones with 228 ms duration, suggesting that the responses are caused by perceiving un-expected fading-out. Interaction between (dominant hemisphere) × (instrument experiences) was observed in the peak amplitudes.
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Keyword(in English) Tone Sequence / Rhythm deviation / Auditory evoked fields
Paper # MBE2014-157,NC2014-108
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Committee NC
Conference Date 2015/3/9(1days)
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Registration To Neurocomputing (NC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) MEG responses to rhythm deviation in tone sequence
Sub Title (in English)
Keyword(1) Tone Sequence
Keyword(2) Rhythm deviation
Keyword(3) Auditory evoked fields
1st Author's Name Yuya TAKESHITA
1st Author's Affiliation Graduate School of Health Sciences, Hokkaido University:Department of Health Sciences, School of Medicine, Hokkaido University:Faculty of Health Sciences, Hokkaido University()
2nd Author's Name Natsuki TAMURA
2nd Author's Affiliation Graduate School of Health Sciences, Hokkaido University:Department of Health Sciences, School of Medicine, Hokkaido University:Faculty of Health Sciences, Hokkaido University
3rd Author's Name Koichi YOKOSAWA
3rd Author's Affiliation Graduate School of Health Sciences, Hokkaido University:Department of Health Sciences, School of Medicine, Hokkaido University:Faculty of Health Sciences, Hokkaido University
Date 2015-03-17
Paper # MBE2014-157,NC2014-108
Volume (vol) vol.114
Number (no) 515
Page pp.pp.-
#Pages 4
Date of Issue