| Summary: | 碩士 === 國立陽明大學 === 腦科學研究所 === 103 === Background and Objectives: Autonomic imbalance, in which one branch (sympathetic branch or parasympathetic branch) of the autonomic nervous system (ANS) dominates over the other, is associated with a lack of dynamic flexibility and health. Music is known to elicit various psychological responses such as autonomic nervous activities. Sympathetic nervous activities increased after listening exciting music. Parasympathetic nervous activities increased after listening sedative music. However, the effects of music on physiological responses have not been consistent from study to study. Recently, more and more research proposed that individual differences such as autonomic nervous activities and personal trait may cause different psychology effects by the same intervention. The aim of this study is to determine music effects on HRV in different types of sympathovagal state. Hypothesis: Subjects in different types of sympathovagal state (sympathetic dominance, SD; sympathovagal balance, SVB; vagal dominance, VD) have different ANS responses after listening to music. For example, sympathetic nervous activities would decrease and parasympathetic nervous activities would increase after listening to the sedative music in SD group. Sympathetic nervous activities would increase and parasympathetic nervous activities would decrease after listening to the exciting music in VD group. Materials and Methods: Sympathovagal state's threshold value for classification could be caculated by HRV of all subjects (n=95). If Before the experiment, the subjects were asked to write visual analog scales (anxiety, sleepiness, alertness, music emotion, fatigue, and music preference) and recorded 5 min HRV as baseline values. During and after the music playing, HRV and visual analog scale would be recorded again. Three types of music (exciting, soft and peace) had been verified to have different strength level. Results: There were no significant differences in age, sex, and music preference between three groups. In SD group, HR decreased after A music and C music. In VD group, HF decreased after any types of music and LF% increased after B music. In SVB group, HF decreased after any types of music. In the self-report data, any types of music significantly decreased music emotion in SD group. Anxiety, alertness, and music emotion significantly decreased in VD group. Fatigue significantly increased in VD group. Conclusions: Music ha effects on balance of ANS and emotional modulation.
Keywords: autonomic imbalance, autonomic nervous system, music
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