P3-5-8. Factors involved in the increase of the Movement-related cortical potential by music

Abstract

To understand the basic mechanism of music-supported rehabilitation, we investigated the correlation between the amplitude of movement-related cortical potential (MRCP) and subjective impression of music during the voluntary button-press movements with music listening. Fourteen healthy volunteers performed the button-press movements using their right index finger, while listening to the two auditory tasks; normally reproduced music (Music) and reverse reproduction of the same music (Non-music). They were instructed to make the self-paced button press about once every ∼10 s. After the EEG experiment, the subjective impression was evaluated with 14 items using the SD method, and the correlation between the MRCP amplitude difference and impression difference were statistically analyzed. We found that the amplitudes of MRCP during Music task were significantly larger than those during Non-music task. In addition, the impression difference of the music/non-music task was found to be significantly different in 9 items, and a significant correlation was found between MRCP difference and impression difference in 2 items (clear, quiet). When music is to be used in rehabilitation, it is suggested that clear and quiet music is suitable for enhancing the motor intention and muscle power.