SPM results of the monetary reward effect (45¢ or 1¢ > 0¢) in all subjects (A: comparison subjects, N=13, and cocaine abusers, N=16) and in direct group comparisons (B: comparison subjects > cocaine abusers). Statistical thresholds were p<0.005 uncorrected for A and p<0.05 uncorrected for B (third order analyses and a priori hypothesis), minimum cluster size was 5 contiguous voxels (135 mm3). CBL is cerebellum, OFC is orbitofrontal cortex, MSN is mesencephalon, OCC is occipital cortex, TH is thalamus, and PFC is prefrontal cortex.