Effects of drug-induced differences in r
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Jean Vry; Wouter Koek; Jef L. Slangen
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Article
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1984
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Springer
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English
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Rats were trained to discriminate between fentanyl (0.04 mg/kg) and saline in a two-lever procedure. Using a FR 10 schedule of food reinforcement, drug-induced differences between the number of reinforcers obtained under fentanyl and saline conditions were observed. The effect of eliminating these d