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. Author manuscript; available in PMC: 2009 Oct 1.
Published in final edited form as: Psychopharmacology (Berl). 2008 May 29;200(2):167–176. doi: 10.1007/s00213-008-1191-y

Figure 2.

Figure 2

Attenuation of cocaine self-administration by dizocilpine pretreatment for ≥ 5 consecutive sessions. Data are means (± SEM) for the last three sessions at each condition in each of four monkeys. The cocaine dose response function following vehicle pretreatment is the average dose-response function for only those monkeys that had received dizocilpine pretreatment. Asterisks indicate significant reductions in cocaine self-administration after dizocilpine pretreatment compared to vehicle pretreatment.