基于心电信号的音乐节拍对作业疲劳作用分析

Effect of music rhythms on relievingthe work fatigue based on the ECG analysis

利用MP150多道生理仪记录心电信号的变化,从听觉的角度,通过HR(Heart Rate,HR)和频域指标的变化,分析两种节拍的音乐(慢节拍音乐60~100拍/min和快节拍音乐120~160拍/min)对作业疲劳的影响,并以静息组为对照组进行了3组试验。结果表明:1)方差分析表明,音乐对心率变化无较大的影响,而对LF(LowFrequency)、HF(High-Frequency)影响较大;2)心电数据分析表明,短时间聆听慢节拍的音乐有助于心率的恢复;3)心率变异性分析表明,音乐使LF降低,HF升高,副交感神经兴奋性增强,能缓解作业疲劳。

This paper is inclined to trace and discover the effects of different music rhythms on the relieving and recovery of the working fatigue by doing a questionnaire survey in accordance with the Fatigue Scale-14 and tracing the electro-cardiogram（ECG）signals that can be recorded with a multi-purposed physiological instrument known as Type MP150.For the research purpose,we have tested twenty subjects who are staying in a state of getting tired.In the said testing process,we have taken it as stimuli two sets of music rhythm：the slow rhythm music（60-100BPM）and the fast rhythm music（120-160 BPM）.In order to gain the results from the contrastive comparison,we have taken another set of ECG responsive signals given by the subjects and made recordings of their responses when they were given in an entirely leisure manner.The results of our investigation from the trace-pursuing analyses on the frequency index of the heart-beating rhythm variability（HRV）indicate the proper ratio among the low-frequency（LF）beating rhythm,the high-beating frequency（HF）beating rhythm and the ratio between the low and high frequencies（LF/HF）,with the variance analysis tending to reach the highest level（P〈0.05）between the pure resting group and the music listening group.For the first few minutes of their listening,the fast music rhythm can make a rise of the heart beating rhythm,whereas the slow rhythm music can make a significant decline of the heart-beating rates,which reflects its function in relieving the work fatigue.The results of analyzing the LF,the HF and the LF/HF of HRV also reflect the reaction of the nervous system itself,showing that the indexes of HF increase during the listening whereas those of LF tend to decrease.Such kinds of variations can prove that the music listening for a short while has a good effect on calming the heart-beating rate and recovery of fatigue.In contrast,music can also help to enhance the excitation of the parasympathetic nervous system,which also helps to relieve the work fatigue,too.