[The analysis of heart rate stability at stressor loads by method of mathematical modeling].
This study presents a mathematical model that enables to investigate the stability of heart rate dynamics at stressor loads. The model is based on quantitative characteristics of impulse conduction in the heart conducting system. Stressor load is modeled by fast neuronal imputation arriving on sinoatrial node. The model describes the phenomena observed at gradual increase of stressor intensity. Existence of a critical point of transition of heart rate dynamics from a stable (linear) to an unstable (chaotic) mode was demonstrated. The present model provides a unified platform for investigating stability of heart rate dynamics.
Mezentseva
L V
LV
D000818:Animals; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008955:Models, Cardiovascular; D013312:Stress, Physiological / Q000502:physiology*