2002'2, p.99
Mashin V. A. , Mashina M. N.
Studying variability of heart beat in different functional states with the help of the graph method

The article describes a method of studying dynamics of heart contractions in different functional states on the principles of the graph theory. The main indices of the structure of the heart beat graph were identified and analyzed with the help of "white noise" models. The in-dices have proved effective in diagnosing a number of functional states. On the basis of the notion of entropy the authors formulate a generalized model of the variation of the indices at different levels of the psychological activity of an organism.