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Acute alcohol intoxication and cognitive functioning.

J B Peterson1, J Rothfleisch, P D Zelazo

  • 1Department of Psychology, McGill University, Montreal, Quebec, Canada.

Journal of Studies on Alcohol
|March 1, 1990
PubMed
Summary
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Acute alcohol intoxication impairs cognitive functions like planning and memory, similar to prefrontal lobe damage. High alcohol doses negatively affect cognitive abilities, with expectancy playing a minor role.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Psychopharmacology

Background:

  • Acute alcohol intoxication can mimic cognitive deficits observed in individuals with prefrontal lobe damage.
  • Controlling for expectancy effects is crucial when studying alcohol's impact on cognition.

Purpose of the Study:

  • To investigate the cognitive effects of acute alcohol intoxication.
  • To determine if alcohol-induced cognitive changes resemble those seen after prefrontal lobe damage.
  • To control for expectancy effects using a balanced placebo design.

Main Methods:

  • A balanced placebo design was employed with 72 male subjects.
  • Subjects received one of three distinct doses of alcohol.
  • A comprehensive battery of neuropsychological tests was administered.

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Main Results:

  • High doses of alcohol significantly impaired planning, verbal fluency, memory, and complex motor control.
  • These cognitive impairments are associated with prefrontal and temporal lobe functions.
  • Subject expectancy did not significantly influence the observed cognitive deficits.

Conclusions:

  • Acute alcohol intoxication detrimentally affects cognitive functions linked to the prefrontal and temporal lobes.
  • The observed cognitive impairments are primarily due to alcohol's direct effects, not expectancy.
  • Findings suggest alcohol intoxication can induce cognitive deficits similar to those resulting from prefrontal lobe damage.