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. Author manuscript; available in PMC: 2010 Mar 2.
Published in final edited form as: Behav Brain Res. 2008 Oct 18;198(1):45–50. doi: 10.1016/j.bbr.2008.10.019

Fig. 4.

Fig. 4

Cocaine conditioned place preference. Adolescent and adult rats were trained with cocaine (3–20 mg/kg/day) and saline for three days. Data are presented as time spent in the cocaine-paired chamber during the post-test (day 5) minus time spent in cocaine-paired chamber during the pretest (day 1, prior to training) expressed as seconds. The 0 line represents no preference. A positive value represents an increase in preference for the cocaine-paired side and a negative value represents an increased preference for the saline-paired side. N = 8–12 animals per group. Doses in the x-axis are shown on a log scale. *significant difference from 0 (P < 0.05).