昼夜节律颠倒影响心率变异性信号的非线性特性研究-陕西师范大学学报期刊社网站

陕西师范大学学报（自然科学版）

物理学

昼夜节律颠倒影响心率变异性信号的非线性特性研究

张璇，李锦*，徐文敏

（陕西师范大学物理学与信息技术学院, 陕西西安 710119）

张璇，女，硕士研究生，研究方向为信号处理。E-mail: 616256640@qq.com

摘要:

研究了昼夜颠倒作息对人体心电信号的影响，并探索了处于睡眠状态和清醒状态人体心电信号在颠倒作息状态下的变化。设计实施昼夜颠倒作息实验, 利用去趋势波动分析法（DFA）和多尺度的基本尺度熵法（MBE）分析颠倒作息情况下的HRV信号，并与正常作息下的变化规律进行比较。实验发现：处于24 h正常作息下的实验对象的α（标度指数）均值大于24 h颠倒作息时的均值，并且在正常作息和颠倒作息下睡眠状态的α值小于清醒状态时的α值。通过对比分析清醒和睡眠状态的MBE曲线以及DFA的结果，发现昼夜颠倒作息对睡眠状态下的HRV信号影响较大。以上研究结果表明颠倒作息会使人体心脏系统的长程相关性减弱并对人体本身动力学复杂性产生一定的负影响，尤其对睡眠状态下HRV信号的负影响较为明显。

关键词：

颠倒作息；睡眠；心率变异性；长程相关性

收稿日期：

2015-05-08

中图分类号：

TN911.6

文献标识码：

文章编号：

1672-4291(2016)02-0048-06doi:10.15983/j.cnki.jsnu.2016.02.226

基金项目：

国家自然科学基金（61102094）；中央高校基本科研业务费专项资金（GK201505035）

Doi:

The nonlinear features study of heart rate variability signals affected by reversed circadian rhythms

ZHANG Xuan， LI Jin* ， XU Wenmin

(School of Physics and Information Technology, Shaanxi Normal University, Xi′an 710119, Shaanxi, China)

Abstract:

The influence of reversed sleep and normal daily routine on electrocardiogram(ECG) signals are investigated.ECG signals at sleep state is compared with it at waking state in reversed sleep. The methods of detrended fluctuation analysis(DFA) and multiscale base-scale entropy(MBE) is used to analyze the signals of HRV at reversed sleep in comparison with normal daily. The mean value of α (scaling exponent) at normal state is bigger than it at reversed state in experiment. The impact on HRV signals of sleep state in reversed sleep is bigger than in normal daily by analyzing the results of the MBE and DFA curves at sleep state and waking state. The results show that reversed sleep will weaken the long correlation of internal mechanism and have a bad effect on complexity of the human body itself. Especially the negative impact on HRV signals of sleep state in reversed schedule is obvious.

KeyWords:

reversed schedule; sleeping; heart rate variability (HRV); long-range correlation