Citation

Rohrbaugh JW, Stapleton JM, Parasuraman R, Frowein HW, Adinoff B, Varner JL, Zubovic EA, Lane EA, Eckardt MJ, Linnoila M. Psychopharmacology 1988; 96(4): 442-446.

Affiliation

Laboratory of Clinical Studies, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD 20892.

Copyright

(Copyright © 1988, Holtzbrinck Springer Nature Publishing Group)

DOI

unavailable

PMID

3149763

Abstract

Effects of alcohol intoxication on visual sustained attention were studied using a vigilance task entailing detection of degraded target stimuli. Data were obtained in separate sessions under four ethanol doses, ranging from 0 (placebo) to 1.05 g/kg lean body weight, with periodic maintenance dosing of 0.12 g/kg. Intoxication lowered the overall level of detection performance, and in addition produced dose-related increases in the rate of performance decrement over time. Analysis of performance data using techniques derived from Signal Detection Theory indicated that the decrements were due specifically to alterations in perceptual sensitivity. Examination of eye movements and blinks indicated that the effects of ethanol were not mediated peripherally. Rather, alcohol appears to have deleterious effects on central processing capacity and the availability of capacity over time. The alcohol-related failure of sustained attention may contribute to increased accident risk in tasks requiring continuous performance.

Language: en