Journal
COMPUTERS IN BIOLOGY AND MEDICINE
Volume 42, Issue 4, Pages 394-401Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compbiomed.2011.12.006
Keywords
EEG; Spectrum; Coherence; Phase synchrony; Alcohol; Kruskal-Wallis
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The objective of present work was to assess differences in spectrum, coherence, and phase synchrony of topical electroencephalogram (EEG) between alcohol-dependent individuals and healthy participants. Surface currents were mitigated by a common average spatial filter. Parametric spectral and coherence estimates obtained for consecutive 0.5 s-long EEG fragments were generally lower for alcoholics than for controls while evaluated for low EEG rhythms. Phase synchrony computed for 2.34 s-long overlapping EEG fragments was lower for alcoholics than for controls while evaluated in alpha(2) and beta(1) rhythms and for specific electrode pairs. Kruskal-Wallis one-way analysis of variance evaluated these alterations as statistically significant. (c) 2011 Elsevier Ltd. All rights reserved.
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