Accession Number : AD0621185

Title :   THE EFFECT OF AMPHETAMINE ON THE DETECTABILITY OF SIGNALS IN A VIGILANCE TASK.

Descriptive Note : Research paper,

Corporate Author : DEFENCE RESEARCH MEDICAL LABS TORONTO (ONTARIO)

Personal Author(s) : Mackworth,Jane F.

Report Date : 29 OCT 1964

Pagination or Media Count : 7

Abstract : Ten mg. of dl-amphetamine sulphate or placebo were given to 56 Ss in three successive runs on a vigilance task requiring detection of a brief pause in the steady movement of a clock hand. Signals occurred at a rate of three a minute. Amphetamine had the same effect on the percentage of signals detected as on the detectability of the signals, as measured by d'. The initial level was unchanged, but the decrement was reduced. No evidence of learning was found in later runs. The effects of amphetamine and knowledge of results were additive. (Author)

Descriptors :   (*AMPHETAMINES, ATTENTION), (*ATTENTION, AMPHETAMINES), SIGNALS, DETECTION, PERFORMANCE(HUMAN), PERCEPTION(PSYCHOLOGY), REACTION(PSYCHOLOGY), LEARNING, ANALYSIS OF VARIANCE, CANADA

Distribution Statement : APPROVED FOR PUBLIC RELEASE