Multifractal heart rate dynamics in human cardiovascular model

Kiyoshi Kotani; Kiyoshi Takamasu; Leonid Safonov; Yoshiharu Yamamoto

doi:10.1117/12.500247

30 April 2003 Multifractal heart rate dynamics in human cardiovascular model

Kiyoshi Kotani, Kiyoshi Takamasu, Leonid Safonov, Yoshiharu Yamamoto

Proceedings Volume 5110, Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems; (2003) https://doi.org/10.1117/12.500247
Event: SPIE's First International Symposium on Fluctuations and Noise, 2003, Santa Fe, New Mexico, United States

Abstract

Human cardiovascular and/or cardio-respiratory systems are shown to exhibit both multifractal and synchronous dynamics, and we recently developed a nonlinear, physiologically plausible model for the synchronization between heartbeat and respiration (Kotani, et al. Phys. Rev. E 65: 051923, 2002). By using the same model, we now show the multifractality in the heart rate dynamics. We find that beat-to-beat monofractal noise (fractional Brownian motion) added to the brain stem cardiovascular areas results in significantly broader singularity spectra for heart rate through interactions between sympathetic and parasympathetic nervous systems. We conclude that the model proposed here would be useful in studying the complex cardiovascular and/or cardio- respiratory dynamics in humans.

Citation Download Citation

Kiyoshi Kotani, Kiyoshi Takamasu, Leonid Safonov, and Yoshiharu Yamamoto "Multifractal heart rate dynamics in human cardiovascular model", Proc. SPIE 5110, Fluctuations and Noise in Biological, Biophysical, and Biomedical Systems, (30 April 2003); https://doi.org/10.1117/12.500247

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