Is the normal heart a periodic oscillator?

Determining Lyapunov exponents from a time series

Alan Wolf, J. B. Swift, Harry L. Swinney et al. · Physica D Nonlinear Phenomena · 1985 · 9.4K citations · Full text

Natural Sciences, Physics, Dynamical Systems +13

Measuring the strangeness of strange attractors

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

Natural Sciences, Mathematics, Physics +12

Power Spectrum Analysis of Heart Rate Fluctuation: A Quantitative Probe of Beat-to-Beat Cardiovascular Control

S. Akselrod, David Gordon, F. Andrew Ubel et al. · Science · 1981 · 5.1K citations

Life Sciences, Cardiology, Physiology +17

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

Independent coordinates for strange attractors from mutual information

Andrew M. Fraser, Harry L. Swinney · Physical review. A, General physics · 1986 · 4.6K citations

Natural Sciences, Mathematics, Physics +17