Fig. 2.
Testing measures on Day 30 of forced abstinence. Groups experienced 10 days of sucrose self-administration and then either CON, EEACUTE, or EECHR housing prior to testing. Immediately prior to testing, rats were pre-treated with SKF 81297 (0, 0.3, 1 mg/kg SC; n = 9–10 per group). Testing measures are indicated in panels. a Active lever responses. b Cue presentations. c Inactive lever responses. d Photobeam breaks (locomotion). Means ± SEMs indicated on Figure. Asterisk indicates significant difference from 0 dose, P < 0.0043. Dagger indicates significant difference from CON, P < 0.0043