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Acute ethanol impairs spatial memory but not stimulus/response memory in the rat
D B Matthews1, P E Simson, P J Best
1Department of Psychology, Miami University, Oxford, Ohio 45056, USA.
Alcoholism, Clinical and Experimental Research
|August 1, 1995
Summary
Acute alcohol (ethanol) selectively impairs spatial memory use in rats, impacting hippocampus-dependent behaviors. This research clarifies ethanol
Area of Science:
- Neuroscience
- Behavioral Pharmacology
- Cognitive Psychology
Background:
- Electrophysiological studies indicate acute ethanol alters hippocampal neuron firing.
- Prenatal or chronic ethanol exposure causes spatial learning deficits.
- Previous findings suggest acute ethanol does not impair spatial localization.
Purpose of the Study:
- To investigate the effects of acute ethanol administration on the utilization of spatial memory.
- To determine if acute ethanol selectively impairs hippocampus-dependent behaviors.
Main Methods:
- Rats were trained on spatial and stimulus/response tasks under saline conditions.
- Following training, rats received ethanol injections.
- The utilization of spatial versus stimulus/response memory was subsequently assessed.
Main Results:
- Acute ethanol administration significantly impaired the use of spatial memory.
- Ethanol did not impair the use of stimulus/response memory.
- Findings suggest a selective effect of acute ethanol on memory systems.
Conclusions:
- Acute ethanol selectively impairs behaviors reliant on the hippocampus.
- The hippocampus is a key target for acute ethanol's cognitive effects.
- This study differentiates acute ethanol's impact from chronic or prenatal exposure effects.