FRACTAL AND MULTIFRACTAL PROPERTIES OF HEARTBEAT INTERVAL SERIES IN EXTREMAL STATES OF THE HUMAN ORGANISM

The fractal and multifractal properties of human heart rate fluctuations in 2 extremal (but not yet pathological) states are investigated in this study: 1) sleep deprivation and 2) alcohol intoxication. Namely these states are dangerous in traffic - accidents, car crushes are an epiphenomenon of tired, angry, sleep deprived or (in the worst case) drunken car drivers. Results of our first pilot experiments are quite promising; it's possible to distinguish between the vigilant and sleep deprived (or alcohol intoxicated) person on the basis of fractal analysis of the heartbeat interval series signal.