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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Psychopharmacology (Berl). 2017 Sep 9;234(23-24):3455–3465. doi: 10.1007/s00213-017-4731-5

Figure 3.

Figure 3

Time-course of cocaine-like discriminative stimulus effects of cocaine, d-amphetamine, and d-methamphetamine in rhesus monkeys (n=4) trained to discriminate cocaine (0.4 mg/kg i.m.). Abscissae: Time after drug administration (min). Top ordinates: percentage cocaine-like responding for the entire response period. Bottom ordinates: rate of responding expressed as responses per second. Data are from the entire component after each pretreatment time for each drug dose and are presented as mean +/− SEM for the group. Substitution data from two subjects were excluded from 1.0 mg/kg cocaine at 10- and 30-min because rate of responding was significantly suppressed (<0.2 responses/sec).