Presentation 2010-07-12
Effect of external audio-visual pacing on vocalization-related neural activity
Akira TOYOMURA, Koichi YOKOSAWA, Kaname SUZUKI, Shinya KURIKI,
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Abstract(in English) External pacing such as metronome sound is known as having fluency-inducing effect on speech-related disorders like stuttering. The neural mechanisms of this effect have not been investigated sufficiently. We measured event related de-synchronization (ERD) with magnetoencephalography (MEG) when the subject performed either vocalization, or observation of video of vocalization. Transforming the measured signal to time-frequency representation, the ERD (~10 and 20 Hz) when vocalizing with pacing was largely observed than without pacing. The ERD when just looking at video of vocalization also caused ERD at the timing of vocalization. These results suggest that the effect of external pacing on people who stutter could be explained as the activation modulation of neural circuit of speech motor control. Furthermore, the specifying of vocalization related ERD has possible applications of Brain Machine Interface (BMI) for communication.
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Keyword(in English) Vocalization / Audio-visual pacing / Magnetoencephalography (MEG)
Paper # NLP2010-34
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Conference Information
Committee NLP
Conference Date 2010/7/5(1days)
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Registration To Nonlinear Problems (NLP)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Effect of external audio-visual pacing on vocalization-related neural activity
Sub Title (in English)
Keyword(1) Vocalization
Keyword(2) Audio-visual pacing
Keyword(3) Magnetoencephalography (MEG)
1st Author's Name Akira TOYOMURA
1st Author's Affiliation Research Center for Advanced Technologies, Tokyo Denki University()
2nd Author's Name Koichi YOKOSAWA
2nd Author's Affiliation Faculty of Health Sciences, Hokkaido University
3rd Author's Name Kaname SUZUKI
3rd Author's Affiliation Faculty of Health Sciences, Hokkaido University
4th Author's Name Shinya KURIKI
4th Author's Affiliation Research Center for Advanced Technologies, Tokyo Denki University
Date 2010-07-12
Paper # NLP2010-34
Volume (vol) vol.110
Number (no) 122
Page pp.pp.-
#Pages 4
Date of Issue