Figure 2.

Reinstatement responding: The upper panel shows active-lever responses (+/− SEM) on the final day of extinction and the reinstatement test session for each of the four test groups. The bottom panel shows inactive-lever responses for the same period. * denote significant increases in (p < 0.05) in reinstatement responding for each group compared to their last final day of extinction. # denote significant differences (p<0.05) in the magnitude of reinstatement between the groups linked by brackets.