Bivariate phase-rectified signal averaging

Aicko Y. Schumann, Jan W. Kantelhardt, Axel Bauer and Georg Schmidt

Physica A: Statistical Mechanics and its Applications, 2008, vol. 387, issue 21, 5091-5100

Abstract: Phase-Rectified Signal Averaging (PRSA) was shown to be a powerful tool for the study of quasi-periodic oscillations and nonlinear effects in non-stationary signals. Here we present a bivariate PRSA technique for the study of the inter-relationship between two simultaneous data recordings. Its performance is compared with traditional cross-correlation analysis, which, however, does not work well for non-stationary data and cannot distinguish the coupling directions in complex nonlinear situations. We show that bivariate PRSA allows the analysis of events in one signal when the other signal is in a certain phase or state; it is stable in the presence of noise and impassible to non-stationarities.

Keywords: Time-series analysis; Quasi-periodicities; Non-stationarity behavior; Cross-correlation analysis; Phase-rectified signal averaging (search for similar items in EconPapers)
Date: 2008
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:387:y:2008:i:21:p:5091-5100

DOI: 10.1016/j.physa.2008.05.002

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