Figure 1. Distributions and averages of quinpirole-induced locomotor activity for LD₂ and HD₂ groups.

(A) Group distributions of the calculated quinpirole area under the curve (AUC) scores used to classify rats into the LD₂ and HD₂ groups. The dotted line represents the median score (M = 15460). (B) Group averages (± sem) of the quinpirole AUC score used to generate the LD₂ and HD₂ groups. The dotted line represents the median score (M = 15460). (C) Distribution of locomotor activity scores (beam breaks/hr) during the ascending within-session quinpirole dose response testing within the LD₂ (gray circles) and HD₂ (red circles) groups. (D) Group averages (± sem) of the quinpirole dose response curve for the LD₂ and HD₂ groups.