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Gender differences in retrieval from long-term memory following acute intoxication with ethanol
J S Haut1, B E Beckwith, T V Petros
1Psychology Department, University of North Dakota, Grand Forks 58202.
Physiology & Behavior
|June 1, 1989
Summary
Ethanol consumption impairs long-term memory retrieval, slowing cognitive operations. Women showed greater deficits than men, suggesting complex effects of alcohol on memory and cognition.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Pharmacology
Background:
- Ethanol is known to affect cognitive functions.
- Understanding its impact on memory retrieval is crucial for public health and safety.
- Sex differences in alcohol metabolism and effects are well-documented but require further investigation in cognitive tasks.
Purpose of the Study:
- To investigate the effects of ethanol on long-term memory retrieval.
- To examine cognitive performance across different decision-making tasks under intoxication.
- To explore potential sex differences in ethanol's impact on memory and cognitive speed.
Main Methods:
- Administered 0.0 or 1.0 ml/kg ethanol to male and female subjects.
- Assessed performance on physical, lexical, and semantic decision tasks involving word pairs.
- Measured response times to evaluate cognitive processing speed and accuracy.
Main Results:
- Intoxicated subjects were significantly slower than sober subjects across all decision types.
- Female subjects exhibited greater performance deficits compared to male subjects when intoxicated.
- The observed slowing was not attributed to motor response speed but to impaired cognitive operations.
Conclusions:
- Ethanol consumption significantly impairs long-term memory retrieval efficiency.
- Cognitive operations underlying working memory are particularly affected by ethanol.
- Neuroendocrine and cognitive factors may explain the observed sex differences in ethanol's effects on memory.