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. Author manuscript; available in PMC: 2017 Jun 12.
Published in final edited form as: Pharmacol Biochem Behav. 2015 Dec 15;142:48–55. doi: 10.1016/j.pbb.2015.12.007

Figure 1. Baseline breakpoints and final ratio for SVS under a PR schedule of reinforcement.

Figure 1

BP and final ratios ± SEM were obtained from 14 consecutive daily 1-hour sessions.