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The C major scale was used either as frequent or as infrequent stimulus in the oddball auditory evoked field measurement where the other stimulus was constructed by removing one the tones in the scale. Multivariate statistical analysis was employed to judge whether there was a significant difference between the responses to complete and incomplete scales in each subject for each `target' tone which...
We measured auditory steady state responses (ASSRs) in magnetoencephalogram to the sinusoidal amplitude modulated tone superimposed with ongoing white noise of various intensities. The power and phase coherence of the ASSR were investigated and stochastic resonance (SR) was indicated by increased synchrony to the stimulus and by increase in power of the ASSR when there was a certain amount of noise...
Mismatch fields in magnetoencephalogram were recorded in 'ignore' condition while presenting combinations of standard and deviant tone sequences to the subjects to investigate how the structure of musical scale is represented in the brain function. Both tonal (having a key) and atonal sequences were employed to see the influence of tonality in eliciting mismatch fields. Mismatch fields were larger...
This report shows the first evidence that stochastic resonance can be triggered in the auditory steady state responses (ASSRs) in MEG (magnetoencephalogram) which was indicated either by increased synchrony to the stimulus or by increase in power of ASSR when there was certain amount of noise in addition to the sinusoidal AM sound compared with the ASSR when there was no noise. To obtain the above...
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