ビートトラッキング時と音楽聴取時の脳波α波帯域パワー変動の比較検討

概要

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Clapping hands in time with high-tempo music makes us more pleasant than only listening to the music. In this report, we examine the distinction of EEGs between while beat tracking and while only listening to the music by observing α-band power. Five young male subjects listen to six pieces of music, then they tap their fingers in time with the music. The subjects' EEGs of 10 electrodes are measured. The FFT analysis of EEGs shows that the coefficient of variation of α-wave power while tapping is less than that while only listening to the music at the four places (O1, 02, F3, F4, T3). The analysis results also show that the reduction of the coefficient of variation of a -wave power of O1, O2, F3, F4 and T3 has a relation to the activities of visual cortex, premotor area, prefrontal area, and auditory area. These results suggest that the subjects have visual images while beat tracking.