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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Psychopharmacology (Berl). 2015 Jul 28;232(20):3741–3752. doi: 10.1007/s00213-015-4031-x

Fig. 2.

Fig. 2

Mean ± SEM active lever presses for amphetamine (a 0.03 mg/kg/ infusion; b–d 0.1 mg/kg/infusion) across the 12 5-min bins within the 1-h test session between EC, IC, and SC rats. a FR session (0.03 mg/kg/ infusion) following 3.0 mg/kg MTEP treatment. Asterisks (*) indicate that SC rats exhibited significantly more active lever pressing than IC rats during bins 1, 7, and 8. b FR session (0.1 mg/kg/infusion) following 3.0 mg/kg MTEP treatment. Pound signs (#) indicate that IC rats exhibited significantly more active lever pressing than EC rats during bins 3 and 5. Asterisks (*) indicate that IC rats exhibited significantly more active lever pressing than SC rats during bins 3, 4, and 5. c PR session (0.1 mg/kg/infusion) following saline treatment. Asterisks (*) indicate that IC rats exhibited significantly more active lever responses than both SC and EC rats. d PR session (0.1 mg/kg/infusion) following 3.0 mg/kg MTEP. Asterisks (*) indicate IC rats exhibiting significantly more active lever responses than both SC and EC rats. Pound signs (#) indicate IC rats exhibiting more active lever responses than SC rats. (all p<.05).