| Literature DB >> 2506599 |
Abstract
The practicality of using second-order fixed-interval schedules in studies of heroin reinforcement with rats was examined. Optimum rates of responding were obtained with a dose of 0.03 mg/kg/infusion and an interval duration of 3 min. In addition, schedules consisting of a only a single interval were shown to be practical, leading to response rates comparable to those obtained with cocaine or food as reinforcer.Entities:
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Year: 1989 PMID: 2506599 DOI: 10.1007/bf00634468
Source DB: PubMed Journal: Psychopharmacology (Berl) ISSN: 0033-3158 Impact factor: 4.530