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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Psychopharmacology (Berl). 2016 Jul 4;233(17):3161–3172. doi: 10.1007/s00213-016-4360-4

Figure 10. Time Spent on the Drug-Paired Side.

Figure 10

Percentage of the total test period (mean ± s.e.m.) spent on the drug-paired side of the apparatus, across successive test sessions, by ad libitum fed (open circles) and food restricted (filled circles) subjects in the morphine CPP (top), LiCL CPA (middle), and naloxone CPA (bottom) experiments.