Related Experiment Videos
Auditory P3 in female alcoholics
Sudha Suresh1, Bernice Porjesz, David B Chorlian
1Department of Psychiatry, State University of New York Downstate Medical Center, Brooklyn, New York 11203, USA.
Alcoholism, Clinical and Experimental Research
|July 25, 2003
Summary
Auditory P3 reductions are linked to alcoholism in women, independent of depression. These findings suggest P3 (P300) may indicate a heritable vulnerability to alcohol dependence.
Area of Science:
- Neuroscience
- Psychiatry
- Genetics
Background:
- The P3 (P300) event-related potential is a potential biomarker for alcoholism risk.
- Previous studies on auditory P3 reductions in alcoholics yielded inconsistent results.
- This study investigated auditory P3 reduction in female alcoholics, considering depression and drug dependence.
Purpose of the Study:
- To quantify auditory P3 amplitude reduction in female alcoholics.
- To determine if P3 reduction is associated with alcoholism, controlling for depression and drug dependence.
- To examine P3 reduction in relation to family history of alcohol dependence.
Main Methods:
- Compared auditory target P3 amplitudes and latencies in 71 female alcoholics and 159 female controls (ages 18–50).
- Utilized repeated-measures ANOVA with age and depression as covariates.
- Examined effects of family density and clinical variables using correlation analysis.
Main Results:
- Female alcoholics exhibited significantly lower P3 amplitudes across all tested regions.
- P3 reductions were not linked to comorbid depression or drug dependence.
- Individuals with a higher family density of alcohol dependence showed smaller P3 amplitudes.
Conclusions:
- Auditory P3 reduction is a significant correlate of alcoholism in women, irrespective of depression.
- Family density findings suggest a heritable component to P3 reduction.
- P3 may serve as a phenotypic marker for alcoholism vulnerability in women.