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Detecting Couplings between Interacting Oscillators with Time-Varying Basic Frequencies: Instantaneous Wavelet Bispectrum and Information Theoretic Approach
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SYSNO ASEP 0341801 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Detecting Couplings between Interacting Oscillators with Time-Varying Basic Frequencies: Instantaneous Wavelet Bispectrum and Information Theoretic Approach Tvůrce(i) Jamšek, J. (SI)
Paluš, Milan (UIVT-O) RID, SAI, ORCID
Stefanovska, A. (SI)Zdroj.dok. Physical Review E. - : American Physical Society - ISSN 1539-3755
Roč. 81, č. 3 (2010), 036207:1-036207:10Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova interacting oscilators ; wavelet bispectrum ; coupling directionality ; causality ; information theory Vědní obor RIV FH - Neurologie, neurochirurgie, neurovědy CEP 7E08027 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy CEZ AV0Z10300504 - UIVT-O (2005-2011) UT WOS 000276199400032 DOI 10.1103/PhysRevE.81.036207 Anotace In the natural world, the properties of interacting oscillatory systems are not constant, but evolve or fluctuating continuously in time. For studying their interactions we propose a complementary approach combining wavelet bispectral analysis and information theory. We show how these methods uncover the interacting properties and reveal the nature, strength and direction of coupling. Wavelet bispectral analysis is generalized as a technique for detecting instantaneous phase-time dependence for the case of two or more coupled nonlinear oscillators whereas the information theory approach can uncover the directionality of coupling and extract driver-response relationships in complex systems. We generate bivariate time-series numerically to mimic typical situations that occur in real measured data, apply both methods to the same time-series and discuss the results. The approach is applicable quite generally to any system of coupled nonlinear oscillators. Pracoviště Ústav informatiky Kontakt Tereza Šírová, sirova@cs.cas.cz, Tel.: 266 053 800 Rok sběru 2011
Počet záznamů: 1