Figure 6.

Active and inactive lever presses (±1 SEM) during tests with α-flupenthixol injections into the (a) aDLS (n=9) or (b) pDMS (n=9) of the FR1 control group trained under the FR1 schedule of reinforcement with a limit of five cocaine infusions. The left panels (black) are the 15-min seeking tests (cocaine free). The right panels (gray) are the FR1 self-administration training sessions that immediately followed the tests (cocaine influenced). Significant interactions prompted post hoc comparisons: ^*Indicates significant difference in active lever responding from the 0-μg test. ⁺Indicates significant within-dose difference between active and inactive lever responses.