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. Author manuscript; available in PMC: 2012 Jun 7.
Published in final edited form as: J Neurosci. 2011 Dec 7;31(49):17917–17922. doi: 10.1523/JNEUROSCI.1903-11.2011

Figure 4.

Figure 4

Effects of bilateral perfusion of D1+D2-type (SKF+QUIN) agonists into NAS core on self-administration behavior maintained by three different unit doses of intravenous cocaine. Data are shown as the mean (+SEM) total numbers of cocaine self-injections (A) and active-lever presses (B) during each of the three 2-hr blocks of the maintenance phase. *, Ps < 0.01-0.05 vs. CORE–aCSF and †, Ps < 0.01-0.05 vs. 1.0 mg as revealed by post-hoc Tukey HSD comparisons following ANOVA. n = 8/group.