Fig. 1. Significant group differences during reward feedback.
Regions with significant User-Group or Age-Group differences during reward feedback in the whole-brain analysis, in n = 125 participants. Images are presented in radiological orientation, such that left on the image is the right hemisphere. Graphs display means and standard errors for reward feedback beta-values averaged across the given region, with individual values overlayed. A User-Group effect in right and left inferior parietal cortex. B User-Group effect in the right frontopolar cortex. C Age-Group effect in superior frontal gyrus. One-sample t-tests showed that individual group means were significantly different from zero, except for in cannabis users in the right inferior parietal cortex, and in adults in the superior frontal gyrus.