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. 2010 Dec 29;5(12):e15889. doi: 10.1371/journal.pone.0015889

Figure 1. Reinstatement of conditioned place preference in reinstating (R) and non-reinstating (NR) mice (n = 11–16 per group).

Figure 1

The preference score is shown over the three time points; the place preference (PP) test day, the test day following extinction (EXT) and reinstatement day (R). Preference score  =  time spent in drug-paired side minus time spent in saline-paired side on test day; *** p<0.001 compared to preference score after extinction for that group (two-way ANOVA with post hoc SNK multiple comparison test).