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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. 4.

Fig. 4

Mean ± SEM a active and b inactive lever presses for amphetamine (0.1 mg/kg/infusion) between EC, IC, and SC rats during FR-1 responding following MTEP (0.3, 1.0, 3.0, 5.0 mg/kg) or saline. Pound signs (#) indicate that EC rats treated with 3.0 mg/kg MTEP, and all rats treated with 5.0 mg/kg MTEP exhibited less active lever responses than saline counterparts. Caret sign (^) indicates that following 5.0 mg/kg MTEP, IC rats displayed significantly more active lever presses than SC rats. Asterisk (*) indicates that IC rats administered 3.0 mg/kg MTEP exhibited significantly more active lever presses than EC and SC rats administered 3.0 mg/kg MTEP (p<.05). b There were no significant differences in inactive lever responding between EC, IC, or SC rats under any MTEP dose