| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
ASSRs in MEG were used to investigate the neurophysiological correlates of harmony recognition and melody recognition especially in polyphonic music. Different tones can be modulated by different frequencies and thus the responses to tones presented simultaneously can be separately measured, which makes ASSR a suitable technique for harmony and polyphonic music recognition. The degree of dissonance of chords was found to be reflected by ASSR amplitudes which also depended on the constituent tones of each type of chords. This result may be further extended to formulate some sort of correlation diagram of chords in terms of neural responses. As regards polyphonic music recognition, we devised ambiguous music consisting of three voices. We found different ASSRs to the same ambiguous music depending on the interpretation of the music by the listener. This result suggested a neurophysiological method of melody recognition using ASSRs.
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