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. Author manuscript; available in PMC: 2009 Feb 6.
Published in final edited form as: Neurochem Res. 2007 Oct 17;33(3):459–467. doi: 10.1007/s11064-007-9454-2

Figure 2. Effects of intra-VTA picrotoxin on cocaine self-administration.

Figure 2

(A, B) Histological reconstruction showing cannulae tip placement for 34 (A) and 68 (B) ng picrotoxin. Numbers indicate coordinates relative to bregma (Paxinos & Watson, 1998). (C) Baseline dose-response functions demonstrating cocaine self-administration on days before and after intra-VTA picrotoxin injections. (D) Dose-response functions demonstrating cocaine self-administration baseline and cocaine self-administration following bilateral intra-VTA injection of two doses of picrotoxin.