The Study of Heart Rate Variability After Listening to Music with Operational Amplifiers Modulation

• Main Authors: Wei-kai Jan, 詹惟凱
• Other Authors: Zer-ren Yu
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/06485011665075409606

碩士 === 南華大學 === 自然醫學研究所 === 99 === 　　The purpose of the present study was to investigate the effect of listening to the music with operational amplifiers(OP-Amps) on HRV activity in young healthy individuals. This study was a within subject design and pretest-posttest experimental design trial carried out on 20 healthy undergraduate students including 10 female subjects, mean age 21.4 ± 1.5 years; 10 male subjects, whose average age was 22.0 ± 1.4 years. Participants were allocated to all of six study models including (1) Model OP-None, (2) Model AD8022, (3) Model AD8012, (4) Model NE5532, (5) Model TL082, and (6) Model OPA2134. Each study model included a control group and a stimuli group. Participants in the stimuli group were asked to listen to indian cultural music in sanskrit with or without OP-Amps for 10 minutes. 　 　　The outcome measure involved HRV indices including the time average of RR-intervals, RRI; standard deviation of all normal to normal intervals, SDNN; the time average of heart rate, HR; the square root of the mean of the sum of the squares of differences between adjacent NN intervals, RMSSD; low frequency power, LF; high frequency power, HF; total power, TP. The values of HRV were used to quantify modulation of the sympathetic and parasympathetic branches of the autonomic nervous system. 　 　　Listening to indian cultural music in sanskrit with OP-Amps included AD8022, TL082 and OPA2134 will have the same effects as the non-modulated indian cultural music in sanskrit. Listening to indian cultural music in sanskrit with AD8012 will have relax effects on HRV. Listening to indian cultural music in sanskrit with NE5532 will have stiluli effects on HRV. 　 　　As the results, listening to indian cultural music in sanskrit with or without OP-Amps for 10 minutes will lower the total power of HRV and let the participants relax. 　 　　Clearly, stimulating the human auditory system by modulating particular audio bandwidths would affect the balance of the autonomic nervous system. The findings described in this study can be served as a reference for studies of music therapy in the future.