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RATE‐DEPENDENT EFFECTS OF DRUGS: MODIFICATION BY DISCRIMINATIVE STIMULI OF THE EFFECTS OF AMOBARBITAL ON SCHEDULE‐CONTROLLED BEHAVIOR 1
Author(s) -
McKearney James W.
Publication year - 1970
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.1970.14-167
Subject(s) - amobarbital , audiology , stimulus control , stimulus (psychology) , psychology , schedule , reinforcement , changeover , communication , developmental psychology , anesthesia , neuroscience , cognitive psychology , social psychology , medicine , physics , computer science , nicotine , quantum mechanics , voltage , epilepsy , operating system
Food‐deprived pigeons responded under a 10‐min fixed‐interval schedule of food presentation. During even‐numbered minutes of the schedule, the discriminative stimuli were the same as those present when food was delivered. During odd‐numbered minutes there was either a change in keylight color or a change in overhead illumination, either for the entire duration of the odd‐numbered minutes, or for 3‐sec after each response. Responding during even‐numbered minutes showed the usual pattern of positive acceleration; responding during odd‐numbered minutes was similarly graded, but rates were much lower. The response‐rate‐increasing effects of amobarbital were inversely related to control rates of responding for both even‐ and odd‐numbered minutes. However, when the stimulus change during odd‐numbered minutes was either keylight color or a change from a darkened to a brightly illuminated chamber, increases in responding were considerably less than predicted on the basis of the effects on responding during even‐numbered minutes. When the stimulus change was from a darkened to a dimly illuminated chamber, control rates of responding changed little, but increases in responding during odd‐numbered minutes after amobarbital were considerably greater, and of the approximate order expected on the basis of control rate.