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Paper Abstract and Keywords
Presentation 2010-03-09 14:25
Micro-process of phase-locking for generating the auditory evoked fields -- Analysis of the phase-locking within each of the trials and across the trials --
Takashi Hamada (AIST) NLP2009-168
Abstract (in Japanese) (See Japanese page) 
(in English) Neuromagnetic signals above the auditory cortex were passed through a band-pass filter between 3 and 16 Hz and then divided into analytic (instantaneous) amplitudes and phases by Hilbert transformation. Both the amplitudes and phase-locking were increased, on average across the trials, at around the timing of N100. These facts per se failed to prove the “phase-locking model”, however, as a possible mechanism for generating the auditory evoked fields, because simulation of the alternative “signal plus noise model” also yielded the same averaged results. Instead, analysis in each of the trials revealed sudden phase resets at random timings associated with “waning” of the amplitudes, which supports the “phase locking model” with a stochastic sense.
Keyword (in Japanese) (See Japanese page) 
(in English) magnetoencephalography / MEG / auditory evoked field / phase locking / phase / Hilbert transformation / instantaneous phase /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 458, NLP2009-168, pp. 59-63, March 2010.
Paper # NLP2009-168 
Date of Issue 2010-03-02 (NLP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Conference Information
Committee NLP  
Conference Date 2010-03-09 - 2010-03-10 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Paper Information
Registration To NLP 
Conference Code 2010-03-NLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Micro-process of phase-locking for generating the auditory evoked fields 
Sub Title (in English) Analysis of the phase-locking within each of the trials and across the trials 
Keyword(1) magnetoencephalography  
Keyword(2) MEG  
Keyword(3) auditory evoked field  
Keyword(4) phase locking  
Keyword(5) phase  
Keyword(6) Hilbert transformation  
Keyword(7) instantaneous phase  
Keyword(8)  
1st Author's Name Takashi Hamada  
1st Author's Affiliation National Institute of Advanced Industrial Science and Technology (AIST)
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Speaker Author-1 
Date Time 2010-03-09 14:25:00 
Presentation Time 25 minutes 
Registration for NLP 
Paper # NLP2009-168 
Volume (vol) vol.109 
Number (no) no.458 
Page pp.59-63 
#Pages
Date of Issue 2010-03-02 (NLP) 


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