Related Experiment Videos
Mismatch negativity: no difference between treatment-naive alcoholics and controls
George Fein1, Shannon McGillivray, Peter Finn
1Neurobehavioral Research, Inc., 201 Tamal Vista Blvd., Corte Madera, CA 94925, USA. george@nbresearch.com
Alcoholism, Clinical and Experimental Research
|December 21, 2004
Summary
Mismatch negativity (MMN) did not differ between alcohol-dependent individuals and controls. MMN measures showed no association with alcoholism risk factors, severity, or withdrawal symptoms in this study.
Area of Science:
- Neuroscience
- Psychiatry
- Addiction Research
Background:
- Mismatch negativity (MMN) is studied as a potential indicator of inhibitory brain deficits in alcoholism.
- Previous research explored MMN in alcoholics, but this study focuses on actively drinking, treatment-naive individuals.
Purpose of the Study:
- To investigate mismatch negativity (MMN) in treatment-naive, actively drinking alcohol-dependent individuals.
- To examine the relationship between MMN and factors like alcoholism risk, withdrawal symptoms, and alcohol use severity.
Main Methods:
- Electroencephalograms (EEGs) were recorded from 84 participants (42 controls, 42 alcohol-dependent).
- A non-attending MMN paradigm was employed.
- Measures included alcoholism risk factors (family history, externalizing symptoms, deviance proneness) and alcohol use variables.
Main Results:
- No significant differences in MMN integral, amplitude, or latency were found between alcohol-dependent subjects and controls.
- MMN measures did not correlate with alcoholism vulnerability, alcohol use variables, or postalcohol withdrawal symptoms.
Conclusions:
- The study found no direct physiological evidence from MMN linking alcohol abuse to disinhibition or deviance proneness.
- MMN may not serve as a reliable biomarker for these aspects of alcoholism in this population.