Presentation 2010-03-09
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,
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Abstract(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)
Keyword(in English) Magnetoencephalography / Auditory evoked fields / Phase-locking / Hilbert transformation
Paper # NLP2009-168
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Committee NLP
Conference Date 2010/3/2(1days)
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Registration To Nonlinear Problems (NLP)
Language JPN
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 : Analysis of the phase-locking within each of the trials and across the trials
Sub Title (in English)
Keyword(1) Magnetoencephalography
Keyword(2) Auditory evoked fields
Keyword(3) Phase-locking
Keyword(4) Hilbert transformation
1st Author's Name Takashi HAMADA
1st Author's Affiliation Kansai center, National Institute of Advanced Industrial Science and Technology(AIST)()
Date 2010-03-09
Paper # NLP2009-168
Volume (vol) vol.109
Number (no) 458
Page pp.pp.-
#Pages 5
Date of Issue