Distinguishing Direct from Indirect Interactions in Oscillatory Networks with Multiple Time Scales

Jakob Nawrath, M. Carmen Romano, Marco Thiel, István Z. Kiss, Mahesh Wickramasinghe, Jens Timmer, Jürgen Kurths, and Björn Schelter
Phys. Rev. Lett. 104, 038701 – Published 21 January 2010

Abstract

We propose a method to infer the coupling structure in networks of nonlinear oscillatory systems with multiple time scales. The method of partial phase synchronization allows us to infer the coupling structure for coupled nonlinear oscillators with one well-defined time scale. The case of oscillators with multiple time scales has remained a challenge until now. Here, we introduce partial recurrence based synchronization analysis to tackle this challenge. We successfully apply the proposed method to model systems and experimental data from coupled electrochemical oscillators. The statistical significance of the results is evaluated based on a surrogate hypothesis test.

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  • Received 5 August 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.038701

©2010 American Physical Society

Authors & Affiliations

Jakob Nawrath1,2,*, M. Carmen Romano3,4, Marco Thiel3, István Z. Kiss5, Mahesh Wickramasinghe5, Jens Timmer1,2,6, Jürgen Kurths3,7,8, and Björn Schelter1,2

  • 1Physics Department, University of Freiburg, Hermann-Herder Str. 3, 79104 Freiburg, Germany
  • 2Center for Data Analysis and Modeling, University of Freiburg, Eckertstr. 1, 79104 Freiburg, Germany
  • 3Institute for Complex Systems and Mathematical Biology, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom
  • 4Institute of Medical Sciences, Foresterhill, University of Aberdeen, Aberdeen AB25 2ZD, United Kingdom
  • 5Department of Chemistry, Saint Louis University, St. Louis, Missouri 63103, USA
  • 6Freiburg Institute for Advanced Studies, Albertstr. 19, 79104 Freiburg, Germany
  • 7Institute of Physics, Humboldt University Berlin, 12489 Berlin, Germany
  • 8Potsdam Institute for Climate Impact Research, 14412 Potsdam, Germany

  • *Corresponding author: jakob.nawrath@gmx.de

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Vol. 104, Iss. 3 — 22 January 2010

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