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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Pharmacol Biochem Behav. 2011 Oct 8;100(3):458–463. doi: 10.1016/j.pbb.2011.10.006

Fig 2.

Fig 2

Mean (+SEM) run times of animals having experienced either one-week or three-weeks of non-cued, non-reinforced runway responding (left panel A). The data reflect an average of the last three extinction trials. Panel B (right side) depicts the mean (+SEM) run times of animals on a single test day following either one or three weeks of extinction. Half the animals in each condition were presented with either a cocaine-paired olfactory cue predictive of cocaine availability in the goal box, or a “neutral” non-paired cue. Across both extinction conditions, animals entered the goal box more quickly in the presence of the drug-paired cue compared to the non-paired cue.