心率变异性的非线性分析──人体心搏的混沌特性

NONLINEAR ANALYSIS ON THE VARIABILITY OF HEART RATE(HRV)──CHAOTIC CHARACTERISTICS OF HUMAN HEARTS

用自制的心电信号测试系统，采集了健康人和心脏病患者的心搏数据，用非线性方法对心率变异性（HRV）进行了较全面的分析．研究结果表明：混沌特性是年轻健康心脏的重要标志，而多变性的降低或周期性的增加往往伴随着衰老和疾病．

Using a simple electrocardio-signal testing system,the heart-rate data of both healthy volunteers and heart patients are collected.By means of nonlinear analysis,we studied the heart rate variability (HRV) comprehensively.The results indicate that chaot-ic characteristic is the important sign of a young and healthy heart,while the drop of vari-ability and the increase of periodicity often comes with decrepit and diseases.