Figure 5.
The effects of vehicle administration on cue-induced reinstatement of nicotine seeking over time and with repeated cue-induced reinstatement testing (n = 21/dose). AL=active lever presses. V1= first reinstatement session conducted immediately after the 10 day extinction phase; V2 = reinstatement session after vehicle administration conducted as part of a within-subjects Latin-square design; V3 = reinstatement session after vehicle administration conducted after completing the Latin-square design. Pound signs (##p < 0.01, ###p < 0.001) indicate difference from extinction.