Natural entropy fluctuations discriminate similar looking electric signals emitted from systems of different dynamics

Abstract

Complexity measures are introduced, that quantify the change of the natural entropy fluctuations at different length scales in time-series emitted from systems operating far from equilibrium. They identify impending sudden cardiac death (SD) by analyzing fifteen minutes electrocardiograms, and comparing to those of truly healthy humans (H). These measures seem to be complementary to the ones suggested recently [Phys. Rev. E {\bf 70}, 011106 (2004)] and altogether enable the classification of individuals into three categories: H, heart disease patients and SD. All the SD individuals, who exhibit critical dynamics, result in a common behavior.

Published in Physical Review E

References in corpus (1)

• Entropy in the natural time-domain

Cited by in corpus (4)

• The fluctuations, under time reversal, of the natural time and the entropy distinguish similar looking electric signals of different dynamics
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