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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Psychopharmacology (Berl). 2014 Apr 17;231(21):4167–4177. doi: 10.1007/s00213-014-3561-y

Fig. 3.

Fig. 3

Mean distance traveled scores (±SEM) of rats (n = 8 per group) on the pretreatment day. Rats were injected with saline, cocaine, METH, or NPA immediately before a 30-min placement in the activity chambers (left panels). Additional groups of rats were injected with SCH23390 (0.1, 0.5, 1, or 5 mg/kg) 15 min before DA agonist pretreatment (right panels).

a Significantly different from the saline control group (left panels) when collapsed across time blocks 1–6.

b Significantly different from the saline control group (left panels) on the same time block.

c Significantly different from the cocaine alone group (top left panel) on the same time block.

d Significantly different from the METH alone group (middle left panel) on the same time block.