Influences on Cocaine Tolerance Assessed under a Multiple Conjunctive Schedule of Reinforcement

Autor/inn/en	Yoon, Jin Ho; Branch, Marc N.
Titel	Influences on Cocaine Tolerance Assessed under a Multiple Conjunctive Schedule of Reinforcement
Quelle	In: Journal of the Experimental Analysis of Behavior, 92 (2009) 3, S.413-422 (10 Seiten) PDF als Volltext (1); PDF als Volltext kostenfreie Datei (2) Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0022-5002
DOI	10.1901/jeab.2009.92-413
Schlagwörter	Intervals; Food; Cocaine; Reinforcement; Influences; Animals; Behavioral Science Research + Suchen Sie Ihr Suchwort? Lebensmittel; Kokain; Positive Verstärkung; Influence; Einfluss; Einflussfaktor; Animal; Tier; Tiere
Abstract	Under multiple schedules of reinforcement, previous research has generally observed tolerance to the rate-decreasing effects of cocaine that has been dependent on schedule-parameter size in the context of fixed-ratio (FR) schedules, but not under the context of fixed-interval (FI) schedules of reinforcement. The current experiment examined the effects of cocaine on key-pecking responses of White Carneau pigeons maintained under a three-component multiple conjunctive FI (10 s, 30 s, & 120 s) FR (5 response) schedule of food presentation. Dose-effect curves representing the effects of presession cocaine on responding were assessed in the context of (1) acute administration of cocaine (2) chronic administration of cocaine and (3) daily administration of saline. Chronic administration of cocaine generally resulted in tolerance to the response-rate decreasing effects of cocaine, and that tolerance was generally independent of relative FI value, as measured by changes in ED50 values. Daily administration of saline decreased ED50 values to those observed when cocaine was administered acutely. The results show that adding a fixed-ratio requirement to fixed-interval schedules is not sufficient to produce schedule-parameter-specific tolerance. Tolerance to cocaine was generally independent of FI-parameter under the present conjunctive schedules, indicating that a ratio requirement, per se, is not sufficient for tolerance to be dependent on FI parameter. (Contains 3 tables and 2 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10