• DOI:10.1152/AJPHEART.00405.2000
• Corpus ID: 21117294

Poincaré plot interpretation using a physiological model of HRV based on a network of oscillators.

@article{Brennan2002PoincarPI,
  title={Poincar{\'e} plot interpretation using a physiological model of HRV based on a network of oscillators.},
  author={Michael Brennan and Marimuthu Swami Palaniswami and Peter Kamen},
  journal={American journal of physiology. Heart and circulatory physiology},
  year={2002},
  volume={283 5},
  pages={
          H1873-86
        }
}

• Michael Brennan, M. Palaniswami, P. Kamen
• Published 1 November 2002
• Mathematics
• American journal of physiology. Heart and circulatory physiology

In this paper, we develop a physiological oscillator model of which the output mimics the shape of the R-R interval Poincaré plot. To validate the model, simulations of various nervous conditions are compared with heart rate variability (HRV) data obtained from subjects under each prescribed condition. For a variety of sympathovagal balances, our model generates Poincaré plots that undergo alterations strongly resembling those of actual R-R intervals. By exploiting the oscillator basis of our model, we detail the way that low- and high-frequency modulation of the sinus node translates into R-R interval Poincaré plot shape by way of simulations and analytic results. With the use of our model, we establish that the length and width of a Poincaré plot are a weighted combination of low- and high-frequency power. This provides a theoretical link between frequency-domain spectral analysis techniques and time-domain Poincaré plot analysis. We ascertain the degree to which these principles apply to real R-R intervals by testing the mathematical relationships on a set of data and establish that the principles are clearly evident in actual HRV records.