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SIGNAL FREQUENCY AND SHOCK PROBABILITY AS DETERMINANTS OF PROLONGED VIGILANCE PERFORMANCE IN RHESUS MONKEYS
Author(s) -
Krasnegor Norman A.,
Brady Joseph V.
Publication year - 1972
Publication title -
journal of the experimental analysis of behavior
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 61
eISSN - 1938-3711
pISSN - 0022-5002
DOI - 10.1901/jeab.1972.17-113
Subject(s) - vigilance (psychology) , audiology , reinforcement , psychology , statistics , medicine , mathematics , cognitive psychology , social psychology
The effects of changing signal frequency on a prolonged vigilance task were investigated by systematically increasing the average inter‐trial interval between successive signals. During a 6‐hr watch, vigilance performance remained constant when the rate of signal presentation was 40, 20, and 10 per hour. When the rate of signal presentation was reduced to 7 or 4 per hour, marked decrements in detection performance were observed. Similar vigilance decrements occurred when the average rate of signals per hour was kept constant (10 per hour) and the probability of receiving a shock for missing a signal was systematically varied. The results of this study indicate the importance of reinforcement factors in the control and maintenance of vigilance performance.