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. Author manuscript; available in PMC: 2011 Mar 1.
Published in final edited form as: Pharmacol Biochem Behav. 2009 Dec 21;95(1):51–55. doi: 10.1016/j.pbb.2009.12.005

Fig. 1b.

Fig. 1b

Cumulative cocaine infusions for each of 10 representative subjects depicted over time (i.e., 120 min self-administration period) for 8 mg (top), 16 mg (middle), and 32 mg (bottom) doses. Individual cumulative infusion curves are without evidence of distinct loading/maintenance phases.