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Methodology for Multifractal Analysis of Heart Rate Variability: From LF/HF Ratio to Wavelet Leaders
 

Summary: Methodology for Multifractal Analysis of Heart Rate Variability:
From LF/HF Ratio to Wavelet Leaders
P. Abry, H. Wendt, S. Jaffard, H. Helgason, P. Goncalv`es, E. Pereira, Cl. Gharib, P. Gaucherand, M. Doret
Abstract-- The present contribution aims at proposing a
comprehensive and tutorial introduction to the practical use of
wavelet Leader based multifractal analysis to study heart rate
variability. First, the theoretical background is recalled. Second,
practical issues and pitfalls related to the selection of the
scaling range or statistical orders, minimal regularity, parabolic
approximation of spectrum and parameter estimation, are
discussed. Third, multifractal analysis is connected explicitly
to other standard characterizations of heart rate variability:
(mono)fractal analysis, Hurst exponent, spectral analysis and
the HF/LF ratio. This review is illustrated on real per partum
fetal ECG data, collected at an academic French public hospital,
for both healthy fetuses and fetuses suffering from acidosis.
I. INTRODUCTION
Heart Rate Variability. Heart Rate Variability (HRV)
refers to the characterization of the short time (within a
minute) fluctuations of Heart Rate (HR) time series. Often, in

  

Source: Abry, Patrice - Laboratoire de Physique, Ecole Normale Supérieure de Lyon

 

Collections: Engineering