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Lyapunov exponents for synchronous 12-lead ECG signals

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Chinese Science Bulletin

Abstract

The Lyapunov exponents of synchronous 12-lead ECG signals have been investigated for the first time using a multi-sensor (electrode) technique. The results show that the Lyapunov exponents computed from different locations on the body surface are not the same, but have a distribution characteristic for the ECG signals recorded from coronary artery disease (CAD) patients with sinus rhythms and for signals from healthy older people. The maximum Lyapunov exponent L 1 of all signals is positive. While all the others are negative, so the ECG signal has chaotic characteristics. With the same leads, L 1 of CAD patients is less than that of healthy people, so the CAD patients and healthy people can be classified by L 1, L 1 therefore has potential values in the diagnosis of heart disease.

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Authors and Affiliations

  1. Department of Engineering Physics, Tsinghua University, Beijing, 100084, China

    Zhenzhou Wang, Zheng Li, Yixiang Wei & Yuzheng Lin

  2. Department of Electronic Science and Engineering, Nanjing University, Nanjing, 210093, China

    Xinbao Ning

Authors
  1. Zhenzhou Wang
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  2. Zheng Li
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  3. Yixiang Wei
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  4. Xinbao Ning
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  5. Yuzheng Lin
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Correspondence to Zhenzhou Wang.

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Wang, Z., Li, Z., Wei, Y. et al. Lyapunov exponents for synchronous 12-lead ECG signals. Chin.Sci.Bull. 47, 1845–1848 (2002). https://doi.org/10.1007/BF03183855

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  • DOI: https://doi.org/10.1007/BF03183855

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