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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Neuropharmacology. 2012 Aug 7;63(7):1201–1207. doi: 10.1016/j.neuropharm.2012.07.044

Table 1. Inactive lever responding during self-administration, extinction, and reinstatement.

The inactive lever presses for the average of the last 3 sessions of self-administration, sessions 1 and 7 of extinction, and cue- and cocaine-induced reinstatement are shown as the mean±SEM for each group.

Group Self-administration Extinction Reinstatement
Last 3 sessions Session 1 Session 7 Cue Cocaine
Veh/Veh 0.2 ± 0.1 27.0 ± 3.4 8.3 ± 1.9 9.7 ± 2.7 6.8 ± 1.1
Veh/SB 18.8 ± 5.5 9.5 ± 4.0 20.0 ± 5.6 5.0 ± 1.1
SB/Veh 0.9 ± 0.4 17.1 ± 5.4 6.3 ± 1.5 7.7 ± 1.1 3.1 ± 1.1
SB/SB 19.1 ± 2.7 7.6 ± 2.3 10.0 ± 2.7 4.0 ± 0.8
Veh-Veh 0.1 ± 0.02 21.9 ± 1.8 6.1 ± 1.0 6.1 ± 1.1 6.3 ± 2.0
Veh-SB 7.8 ± 1.6 3.9 ± 1.9
SB-Veh 12.6 ± 3.5 3.8 ± 0.8 6.4 ± 2.5 6.4 ± 3.7
SB-SB 4.1 ± 1.1 2.8 ± 1.2
SB (post)-Veh 19.6 ± 4.5 6.6 ± 1.7 6.9 ± 2.7 5.6 ± 2.0
SB (post)-SB 2.1 ± 1.4 3.7 ± 1.7