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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Pharmacol Biochem Behav. 2009 Sep 13;94(2):262–270. doi: 10.1016/j.pbb.2009.09.005

Figure 2.

Figure 2

Bimodal distribution of mean number of SA infusions (Low curve: y0 = 0; A = 6; μ = 7; σ = 0.184; χ2 = 21.42; High curve: y0 = −0.0126; A = 2.62; μ = 15.479; σ = 0.3678; χ2 = 27.037; Median: 13).