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. Author manuscript; available in PMC: 2011 Apr 19.
Published in final edited form as: Exp Clin Psychopharmacol. 2010 Oct;18(5):395–408. doi: 10.1037/a0021042

Figure 4.

Figure 4

Effects of modafinil on the cocaine self-administration dose-effect curve in individual monkeys. Ordinate: numbers of cocaine injections self-administered per day during baseline conditions (open symbols) and during chronic modafinil treatment (filled symbols). Points above ‘S’ show data collected when saline was the solution available for self-administration. Each data point shows the mean ±SEM from the last three days of each cocaine dose condition. The identification number for each monkey is shown in the upper left of each panel.