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. Author manuscript; available in PMC: 2012 Jan 10.
Published in final edited form as: Neurosci Lett. 2010 Oct 23;487(3):293–296. doi: 10.1016/j.neulet.2010.10.040

Fig. 1.

Fig. 1

CPP with oral (per os, p.o.) or intraperitoneal (i.p.) methylphenidate (MPH) relative to saline controls. Bars represent the mean (±S.E.M.) change in the amount of time (sec) spent in the MPH-paired compartment on the post-conditioning test minus the amount of time spent in the MPH-paired compartment on the pre-conditioning test. During conditioning, MPH (3 or 10 mg/kg) was given p.o. or i.p. immediately (A) or 30 min (B) prior to daily conditioning sessions. Symbol (*) indicates a significant difference relative to saline controls (P<0.05). Symbol (#) indicates a significant difference relative to the corresponding dose of p.o. MPH (P<0.05). N=6 rats per group.