Patterns of regional brain activity in alcohol-dependent subjects

Elizabeth P. Hayden, Ryan E. Wiegand, Eric T. Meyer, Lance O. Bauer, Sean J. O'Connor, John I. Nurnberger, David B. Chorlian, Bernice Porjesz, Henri Begleiter

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Background: Electroencephalographic (EEG) measures of hemispheric asymmetry in anterior brain activity have been related to a variety of indices of psychopathology and emotionality. However, little is known about patterns of frontal asymmetry in alcohol-dependent (AD) samples. It is also unclear whether psychiatric comorbidity in AD subjects accounts for additional variance in frontal asymmetry, beyond a diagnosis of AD alone. Methods: We compared 193 AD subjects with 108 control subjects on resting brain activity in anterior and posterior regions, as indexed by asymmetries in α band power in the left and right hemispheres. Within the AD group alone, we examined whether comorbid major depressive disorder (MDD) or antisocial personality disorder (ASPD) had effects on regional asymmetry. Results: Compared with control subjects, AD subjects exhibited lower left, relative to right, cortical activation in anterior regions. Evidence that comorbidity in AD subjects accounted for further variance in EEG asymmetry was mixed; AD subjects with comorbid ASPD were not significantly different from those without ASPD, while AD subjects with a lifetime history of MDD showed less asymmetry in anterior regions than those without MDD. Conclusions: Our findings indicate that AD subjects exhibit a pattern of frontal asymmetry similar to that found in other psychiatric groups. Results examining the effects of comorbidity in AD on EEG asymmetry were inconclusive. The implications of our findings for future work are described.

Original languageEnglish (US)
Pages (from-to)1986-1991
Number of pages6
JournalAlcoholism: Clinical and Experimental Research
Volume30
Issue number12
DOIs
StatePublished - Dec 1 2006

Keywords

  • Alcohol Dependence
  • Anterior Asymmetry
  • Comorbidity
  • EEG
  • Negative Emotionality

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Toxicology

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    Hayden, E. P., Wiegand, R. E., Meyer, E. T., Bauer, L. O., O'Connor, S. J., Nurnberger, J. I., Chorlian, D. B., Porjesz, B., & Begleiter, H. (2006). Patterns of regional brain activity in alcohol-dependent subjects. Alcoholism: Clinical and Experimental Research, 30(12), 1986-1991. https://doi.org/10.1111/j.1530-0277.2006.00244.x