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. Author manuscript; available in PMC: 2010 Jun 2.
Published in final edited form as: J Neurosci. 2009 Sep 16;29(37):11619–11627. doi: 10.1523/JNEUROSCI.3206-09.2009

Figure 1.

Figure 1

Behavioral paradigm and lever pressing behavior. a, Self-administration and associated cues. A red lamp on the operant panel served as the discriminative cue (Discrim) that signaled availability of cocaine under an FR10 contingency. Upon meeting that contingency, the discrete cue (a green lamp) was presented during the18 s infusion period (Coc Inf). b, Lever pressing behavior. Response rate was greater during the discriminative cue than discrete cue, or baseline. c, Distribution of time taken to the first lever press after the onset of the discriminative cue. The boundaries of the box indicate the 75th/25th percentile and the whiskers indicate the 90th/10th percentiles. The center line in the box represents the median value and the two dots, located above and below the box, represent 95th/5th percentiles. Statistics are calculated from 370 trials (5 in each of 74 sessions).