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. Author manuscript; available in PMC: 2011 Feb 1.
Published in final edited form as: J Neurosci. 2010 Aug 25;30(34):11346–11355. doi: 10.1523/JNEUROSCI.2524-10.2010

Fig. 4.

Fig. 4

shows the mean (± SEM) number of active nosepokes (Panel a; note Log10 scale) and cocaine infusions (Panel b) made by rats receiving 0.4 mg/kg/inf cocaine over 5, 45 or 90 sec after self-administration sessions were lengthened from 1 hour to 6 hours/day (“long access”, LgA). LgA session data were analyzed as blocks of two daily sessions, and the average for the ShA sessions is shown for comparison. In Panel a, (†) indicates 5 vs. 90 sec, p<0.011, and (*) indicates 45 vs. 90 sec, p<0.024. In Panel b, (†) indicates 5 vs. 90 sec, p<0.001 and interaction p<0.004. (*) indicates 45 vs. 90 sec, p<0.001.