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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Exp Clin Psychopharmacol. 2016 Feb 15;24(2):142–146. doi: 10.1037/pha0000064

Figure 2.

Figure 2

(A) Sleep efficiency and (B) sleep fragmentation at baseline, methamphetamine self-administration maintenance (0.01 mg/kg/infusion), extinction, or reinstatement test sessions conducted with three different doses of methamphetamine (METH, 0.03, 0.1 or 0.3 mg/kg, IV). Nighttime activity data for baseline and self-administration maintenance were combined across a 5-day span of time. Nighttime activity data for extinction were recorded as the night after the first effective extinction session. Data are expressed as mean±SEM. *p<0.05 compared to Maintenance (0.01 METH); Δ p<0.05 compared to Extinction(Saline). One-way repeated measures ANOVA followed by Bonferroni’s post-hoc test.