Fig. 2. Effect of RU486 pretreatment on cocaine self-administration.
(a) Percent change in infusions earned (collapsed across cocaine unit dose) after vehicle pretreatment compared to baseline in EC and IC rats. (b) Percent change in infusions earned after RU486 pretreatment in EC and IC rats at 0.03, 0.1, and 0.3 mg/kg/infusion cocaine. * p < 0.05 from EC baseline
