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. Author manuscript; available in PMC: 2017 May 1.
Published in final edited form as: Brain Res Bull. 2015 Dec 28;123:71–80. doi: 10.1016/j.brainresbull.2015.12.005

Figure 1. Extended Access Addition-like Behavior.

Figure 1

A) Mean (+/− SEM) number of licks/5 min of 0.15% saccharin during Trial 1 and Trial 16 for Saline, Small, and Large Suppressors. Mean (+/− SEM) number of saline or heroin (0.06 mg/0.2ml of heroin) infusions/6 h B) and C) within in the 1st h for Saline, Small, and Large Suppressors during Trial 1 and Trial 16. D) Mean (+/− SEM) number of saline or heroin infusions earned during progressive ratio testing for Saline, Small, and Large Suppressors. E) Mean (+/− SEM) number of drug seeking behaviors/1 h exhibited during Hour 1 of the 6 h extinction period (left panel) and during 1 h following a single experimenter delivered iv dose of saline or heroin for Saline, Small, and Large Suppressors. *p<0.05 (n=5/group)