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Figure 3: The differential reinforcement of low-rate response 10 s inter-response time curve after SCH23390 pretreatment in a within-subjects design (n = 9): 0.02 mg/kg SCH23390 (a) and 0.06 mg/kg SCH23390 (b). Neither doses of SCH23390 appeared to reverse the SKF83959-induced decline in response frequency on the differential reinforcement of low-rate response 10-s schedule (Experiment 1). |
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