Direction of Coupling from Phases of Interacting Oscillators: An Information-Theoretic Approach

0404806 - UIVT-O 20030181 RIV US eng J - Journal Article
Paluš, Milan - Stefanovska, A.
Direction of Coupling from Phases of Interacting Oscillators: An Information-Theoretic Approach.
Physical Review. E. Roč. 67, č. 5 (2003), s. 055201. ISSN 1063-651X
R&D Projects: GA ČR GA205/00/1055; GA MZd NF6258
Grant - others:CZ-SI MŠk(XX) cooperation project 14-2003-04
Institutional research plan: AV0Z1030915
Keywords : coupled systems * causality * information theory * cardiorespiratory system
Subject RIV: BA - General Mathematics
Impact factor: 2.202, year: 2003

A directionality index based on conditional mutual information is proposed for application to the instantaneous phases of weakly coupled oscillators. Its abilities to distinguish unidirectional from bidirectional coupling, as well as to reveal and quantify asymmetry in bidirectional coupling, are demonstrated using numerical examples of quasiperiodic, chaotic, and noisy oscillators, as well as real human cardiorespiratory data.
Permanent Link: http://hdl.handle.net/11104/0125039