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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: Pharmacol Biochem Behav. 2011 Apr 29;99(3):459–467. doi: 10.1016/j.pbb.2011.04.018

Figure 1.

Figure 1

Mean minute by minute diastolic blood pressure (left panels), systolic blood pressure (middle panels), and heart rate (right panels) on Days 1, 9 and 18. During the first (i.e., pre-session) and last (i.e., post-session) 20 minutes of each session access to the levers was blocked and no infusions were administered. Variance estimates were omitted for brevity; descriptively, the vast majority of SEMs ranged from 1.5–4.0 mmHg for both DBP and SBP and from 5–15 bpm for heart rate.