EEG phenotype in alcoholism: increased coherence in the depressive subtype.
paper
Cited
Public
Unavailable
- Authors
- Winterer, G; Enoch, M-A; White, K V; Saylan, M; Coppola, R; Goldman, D
- Year
- 2003
- Journal
- Acta psychiatrica Scandinavica
- PMID
- 12807377
- DOI
- 10.1034/j.1600-0447.2003.00060.x
OBJECTIVE: Electroencephalography (EEG) power and coherence changes may be trait markers for alcoholism providing clues to brain mechanisms of vulnerability. However, it is unclear whether alpha power and coherence differences reflect reversible toxic or withdrawal effects of alcohol. METHOD: The EEGs of 10 non-abstinent and 16 long-term abstinent alcoholics (7.7 +/- 5.8 years) and 25 controls were analyzed. Levels of anxiety and depression were assessed by questionnaire. RESULTS: No statistically significant EEG power differences were observed between groups, although the numerical difference between alcoholics and controls was similar to that previously reported. Bilateral, intrahemispheric, posterior coherences were significantly increased in the alpha and beta frequency bands both in long-term abstinent and non-abstinent alcohol-dependent subjects - particularly when depressiveness was included as a covariate. CONCLUSION: These results suggest that increased EEG-coherence (cortical synchronization) may serve as endophenotype for alcoholism in conjunction with increased depressiveness and point to a possible involvement of GABAergic and/or glutamatergic neurotransmission.
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