Relation of chaos activity characteristics of the cardiac system with the evolution of species

作     者：WANG XingyuanSchool of Electronic and Information Engineering, Dalian University of Technology, Dalian 116024, China 

作者机构：Dalian University of Technology School of Electronic and Information Engineering Dalian China 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2002年第47卷第24期

页      面：2042-2048页

核心收录：

学科分类：07[理学] 070201[理学-理论物理] 0702[理学-物理学] 

基　　金：This work was supported by the National Natural Science Foundation of China (Grant No. 69974008) the Chinese Postdoctoral Science Foundation and the Natural Science Foundation of Liaoning Province (Grant No. 972194) 

主　　题：chaos evolution of species ECG signals power spectra correlation dimension Lyapunov exponent. 

摘      要：According to the nonlinear theory, the experiments have been conducted on sample ECG (electrocardiogram) signals of healthy human beings, coronary heart disease patients and adult canines. On the basis of the analyses of the power spectra, the computation of the correlation dimension and the Lyapunov exponent to a large number of ECG signals, the following conclusions are shown: through the comparative research, (1) the analyses of the power spectra, the computation of the correlation dimension and the Lyapunov exponent to the ECG signals reflect the whole dynamic characteristics of the hearts, and they may become a new method of researching ECG quantitatively to an early diagnose of heart disease. (2) Under normal physiological conditions the cardiac activities are chaotic, while under pathologic conditions the cardiac activities approach regularity. (3) On the basis of the comparative research of human beings and canines, it is revealed that chaos may be a quantitative index to measure the evolution