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. Author manuscript; available in PMC: 2020 Jun 1.
Published in final edited form as: Drug Alcohol Depend. 2019 Apr 6;199:50–58. doi: 10.1016/j.drugalcdep.2019.02.016

Figure 4.

Figure 4.

Substitution for the discriminative stimulus effects of methamphetamine (Meth, left panels), cocaine (center panels), and MDMA (right panels): Top panels show percentage of total responses made on the drug-appropriate lever. Bottom panels show rate of responding in responses per second (r/s). n=6 unless otherwise shown, except dimethylone in methamphetamine-trained rats n=9. Vehicle and training drug controls are pooled averages (n=30). Ctrl indicates vehicle and training drug control values. * indicates response rate different from vehicle control (p < 0.05).