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Related Experiment Videos

Interaction between ethanol and dextroamphetamine: effects on psychomotor performance.

M Perez-Reyes1, W R White, S A McDonald

  • 1Department of Psychiatry, University of North Carolina School of Medicine, Chapel Hill 27599-7175.

Alcoholism, Clinical and Experimental Research
|February 1, 1992
PubMed
Summary
This summary is machine-generated.

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Dextroamphetamine improved psychomotor performance impaired by ethanol, but did not reduce subjective intoxication. This study examined drug interactions affecting driving skills.

Area of Science:

  • Pharmacology
  • Neuroscience
  • Human Performance

Background:

  • Ethanol (alcohol) is known to impair psychomotor skills crucial for driving.
  • Dextroamphetamine is a central nervous system stimulant with potential effects on cognitive and motor functions.

Purpose of the Study:

  • To investigate the interaction between ethanol and dextroamphetamine on psychomotor performance.
  • To determine if dextroamphetamine can mitigate ethanol-induced driving impairment.

Main Methods:

  • A double-blind, placebo-controlled, crossover study involving 12 healthy male volunteers.
  • Administration of ethanol (0.85 g/kg) and varying doses of dextroamphetamine (0.09 mg/kg, 0.18 mg/kg) or placebos.
  • Assessment of psychomotor performance using the Simulator Evaluation of Drug Impairment (SEDI) task, alongside subjective intoxication ratings and drug concentration measurements.

Related Experiment Videos

Main Results:

  • Ethanol significantly impaired psychomotor performance related to driving skills.
  • Dextroamphetamine dose-dependently reduced these ethanol-induced performance decrements.
  • Subjective ratings of ethanol intoxication were not significantly altered by dextroamphetamine administration.

Conclusions:

  • Dextroamphetamine can counteract the objective driving impairment caused by ethanol.
  • The subjective feeling of intoxication does not necessarily correlate with objective performance changes when these drugs are combined.