Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Direction of coupling from phases of interacting oscillators: A permutation information approach.
AU - Bahraminasab, Alireza
AU - Ghasemi, Fatemeh
AU - Stefanovska, Aneta
AU - McClintock, Peter V. E.
AU - Kantz, Holger
PY - 2008/2
Y1 - 2008/2
N2 - We introduce a directionality index for a time series based on a comparison of neighboring values. It can distinguish unidirectional from bidirectional coupling, as well as reveal and quantify asymmetry in bidirectional coupling. It is tested on a numerical model of coupled van der Pol oscillators, and applied to cardiorespiratory data from healthy subjects. There is no need for preprocessing and fine-tuning the parameters, which makes the method very simple, computationally fast and robust.
AB - We introduce a directionality index for a time series based on a comparison of neighboring values. It can distinguish unidirectional from bidirectional coupling, as well as reveal and quantify asymmetry in bidirectional coupling. It is tested on a numerical model of coupled van der Pol oscillators, and applied to cardiorespiratory data from healthy subjects. There is no need for preprocessing and fine-tuning the parameters, which makes the method very simple, computationally fast and robust.
UR - http://www.scopus.com/inward/record.url?scp=40849102748&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.100.084101
DO - 10.1103/PhysRevLett.100.084101
M3 - Journal article
VL - 100
SP - 084101
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 8
ER -