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Related Experiment Videos

Mismatch negativity: no difference between controls and abstinent alcoholics.

George Fein1, Bridget Whitlow, Peter Finn

  • 1Neurobehavioral Research, Inc., Corte Madera, CA, USA. george@nbresearch.com

Alcoholism, Clinical and Experimental Research
|January 28, 2004
PubMed
Summary

Mismatch negativity (MMN) brain responses did not differ between abstinent alcoholics and controls. MMN is not associated with alcoholism risk or severity, suggesting it is not a trait marker for alcoholism.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Addiction Research

Background:

  • Mismatch negativity (MMN) is studied as a potential indicator of brain inhibitory deficits in alcoholism.
  • Previous research explored MMN in alcoholics, but this study focuses on long-term abstinent individuals.

Purpose of the Study:

  • To investigate MMN amplitude and latency in abstinent alcoholics compared to controls.
  • To examine the association of MMN with family history density, externalizing disorders, and alcohol use variables in alcoholics.

Main Methods:

  • Electroencephalograms (EEGs) were recorded from 38 abstinent alcoholics and 38 controls during a passive MMN experiment.
  • Risk factors for alcoholism (family history, personality traits, antisocial symptoms) and alcohol use severity were assessed.

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Main Results:

  • No significant differences in MMN amplitude or latency were found between abstinent alcoholics and controls.
  • MMN measures showed no significant associations with alcoholism risk factors or alcohol use severity.

Conclusions:

  • MMN does not appear to be affected by chronic alcoholism or associated with alcoholism vulnerability.
  • MMN is unlikely to serve as a trait marker for alcoholism or its risk.