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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Psychopharmacology (Berl). 2014 Feb 23;231(16):3179–3188. doi: 10.1007/s00213-014-3489-2

Fig. 4. Blocking adenosine A2A receptors during extinction has no effects on extinction responding.

Fig. 4

(a) Average number of cocaine infusions and active lever responses in each 4 h session over the last 6 days of the self-administration phase. (b) A2AR antagonism by SCH 442416 (0.3 mg/kg, 1 mg/kg, or 3 mg/kg, i.p.), has no effect on extinction responding when administered immediately prior to the beginning of each 4 h extinction session.