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. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: Brain Res Bull. 2017 Sep 9;138:88–95. doi: 10.1016/j.brainresbull.2017.09.002

Figure 3.

Figure 3

A: Number (mean ± SEM) of responses emitted on the “active” spout during each Phase II trial. Blue significance symbols indicate a difference between Low Gapers and Saline Controls; red symbols indicate a difference between High Gapers and Saline controls. Black symbols indicate that there is a significant difference between High and Low Gapers. B: Total number (mean ± SEM) of infusions self-administered per 6-hour Phase II trial by Saline Controls (gray), and Low (blue) and High (red) Gapers. C: Total amount (mg/kg; mean ± SEM) of cocaine self-administered by Low (blue) and High (red) Gapers during each 6-hour trial. *, p < 0.05; #, p < 0.01.