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Relationships between impulsivity and subjective response in an IV ethanol paradigm
Robert F Leeman1, Elizabeth Ralevski, Diana Limoncelli
1Department of Psychiatry, Yale School of Medicine, CMHC, Room S200, 34 Park Street, New Haven, CT, 06519, USA, robert.leeman@yale.edu.
Psychopharmacology
|February 21, 2014
Summary
Higher impulsivity in individuals is linked to stronger stimulant effects and weaker sedative effects from alcohol. This may increase the risk for alcohol problems in impulsive drinkers.
Area of Science:
- Neuroscience
- Psychology
- Addiction Research
Background:
- Impulsivity and subjective responses to alcohol are known risk factors for alcohol-related problems.
- These factors may also serve as endophenotypes for alcohol dependence.
- Limited research has explored the connection between impulsivity and alcohol's subjective effects.
Purpose of the Study:
- To investigate the relationship between self-reported impulsivity and subjective responses to ethanol.
- To determine how ethanol dose (high, low, placebo) and time influence these responses.
- To examine interactions between impulsivity, ethanol dose, and time.
Main Methods:
- Secondary analysis of a within-subject, placebo-controlled, dose-ranging ethanol study.
- Utilized intravenous (IV) ethanol infusion with a clamping technique for controlled blood alcohol concentration.
- Included 105 healthy, non-alcohol dependent social drinkers aged 21-30, comparing responses across impulsivity levels.
Main Results:
- Individuals with higher impulsivity reported increased stimulant effects and decreased sedative effects from alcohol.
- These effects were more pronounced at higher ethanol doses.
- Higher impulsivity correlated with a faster rise in stimulant effects during initial alcohol infusion.
Conclusions:
- Impulsive individuals may experience more rewarding stimulant effects and fewer negative sedative effects from alcohol.
- These altered subjective experiences could contribute to a higher risk of developing alcohol problems.
- Understanding these subjective responses is crucial for addiction research and prevention strategies.
