Analysis of the nonlinear heart rate dynamics by two-contour mathematical model |
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Authors: | L V Mezentseva |
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Institution: | 1.Anokhin Institute of Normal Physiology,Russian Academy of Medical Sciences,Moscow,Russia |
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Abstract: | Using a two-contour mathematical model, changes in the degree of heart rate variability induced by an increased extracardial
impulsation in the sinoatrial node have been studied. The model is based on quantitative characteristics of impulse conduction
in the cardiac conduction system. A mathematical and computer modeling revealed the following three regimes of heart rate
variability: linear dynamics, the 1st-degree chaos, and the 2nd-degree chaos. Transitions between these regimes have been
studied. A comparative analysis of the one- and two-contour models of heart rate regulation has been performed. |
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