Approximate entropy profile: a novel approach to comprehend irregularity of short-term HRV signal

Heart Rate Variability

Task Force of the European Society of Cardiology the North A Electrophysiology · Circulation · 1996 · 16.9K citations

Physiological time-series analysis using approximate entropy and sample entropy

Joshua Richman, J. Randall Moorman · American Journal of Physiology-Heart and Circulatory Physiology · 2000 · 7.8K citations

Natural Sciences, Physiology, Biomedical Signal Processing +7

Approximate entropy as a measure of system complexity.

Steven M. Pincus · Proceedings of the National Academy of Sciences · 1991 · 5.8K citations

Natural Sciences, Computer Science, Mathematics +14

Measuring the strangeness of strange attractors

Peter Grassberger, Itamar Procaccia · Physica D Nonlinear Phenomena · 1983 · 5.6K citations

Natural Sciences, Mathematics, Physics +12

Ergodic theory of chaos and strange attractors

Jean‐Pierre Eckmann, David Ruelle · Reviews of Modern Physics · 1985 · 4.9K citations

Natural Sciences, Mathematics, Physics +17