混沌动力学在心率变异分析中的应用  

Application of Chaos Dynamics in Heart Rate Variability Analgsis

作　　者：明东[1] 万柏坤[1] 胡勇[2] 王以忠[3] 

机构地区：[1]天津大学生物医学工程系,天津300072 [2]中国医学科学院生物医学工程研究所,天津300192 [3]天津科技大学电子信息与自动化学院,天津300222

出　　处：《航天医学与医学工程》2005年第6期442-445,共4页Space Medicine & Medical Engineering

基　　金：天津市重点学科建设基金(2000-31)

摘　　要：目的利用混沌动力学方法进行心率变异信号的非线性特征描述和检测。方法根据Takens延迟方法进行心率变异信号的状态空间重构,结合奇异值分解技术给出规律的吸引子形态,并通过相关积分计算相应的信号关联维值。结果以实例形式给出健康人心率变异信号的典型吸引子和相应关联维计算结果。结论混沌动力学在心率变异信号处理中的应用有望为某些心脏疾病的辅助临床诊断和治疗提供一个新的途径。Objective To apply Chaos dynamics method into describing and detecting nonlinear characters of heart rate variability signals. Method The state-space of heart rate variability signal was reconstructed according to Takens method of delays and its regular attractor was obtained with singular value decomposition technique. Relevant correlation dimension was calculated through signal correlation integral. Result Demo results were shown as the typical attractor and its correlation dimension of healthy heart rate variability signals. Conclusion The application of Chaos dynamics in heart rate variability signal processing may pave a new way for aided clinical diagnoses and treatment of some cardiopathies.

关 键 词：混沌动力学 心率变异性 吸引子 关联维 

分 类 号：R318[医药卫生—生物医学工程] R319[医药卫生—基础医学]