Nonlinear Sciences – Chaotic Dynamics
Scientific paper
2001-09-18
Phys. Rev. E, 65:041903 (2002)
Nonlinear Sciences
Chaotic Dynamics
32 pages, 1 table, 8 figures
Scientific paper
10.1103/PhysRevE.65.041903
We study the synchronization between left and right hemisphere rat EEG channels by using various synchronization measures, namely non-linear interdependences, phase-synchronizations, mutual information, cross-correlation and the coherence function. In passing we show a close relation between two recently proposed phase synchronization measures and we extend the definition of one of them. In three typical examples we observe that except mutual information, all these measures give a useful quantification that is hard to be guessed beforehand from the raw data. Despite their differences, results are qualitatively the same. Therefore, we claim that the applied measures are valuable for the study of synchronization in real data. Moreover, in the particular case of EEG signals their use as complementary variables could be of clinical relevance.
Grassberger Peter
Kraskov Alexander
Kreuz Thomas
Quiroga Rodrigo Quian
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