12 citations · 21 across the 5 of their papers we have counts for
4 papers
Scale Specific and Scale Independent Measures of Heart Rate Variability as Risk Indicators
Y. Ashkenazy, M. Lewkowicz, J. Levitan +7
We study the Heart Rate Variability (HRV) using scale specific variance and scaling exponents as measures of healthy and cardiac impaired individuals. Our results show that the var…
Discrimination of the Healthy and Sick Cardiac Autonomic Nervous System by a New Wavelet Analysis of Heartbeat Intervals
Y. Ashkenazy, M. Lewkowicz, J. Levitan +3
We demonstrate that it is possible to distinguish with a complete certainty between healthy subjects and patients with various dysfunctions of the cardiac nervous system by way of…
Chaotic Signatures in the Spectrum of a Quantum Double Well
R. Berkovits, Y. Ashkenazy, L. P. Horwitz +1
The spectrum of a double well constructed of a square barrier embedded in an infinite well is analyzed. Level statistics for levels slightly above the barrier show signs of Wigner…
The Necessity for a Time Local Dimension in Systems with Time Varying Attractors
K. Saermark, Y. Ashkenazy, J. Levitan +1
We show that a simple non-linear system of ordinary differential equations may possess a time varying attractor dimension. This indicates that it is infeasible to characterize EEG…