To ensure our results were not driven by other factors, we performed additional quality checks. We noted there were some participants with substance use disorders other than cannabis and alcohol (n = 6). To ensure our results were not driven by these participants, we added in a binary covariate indexing other substance use disorders, and our main effect of AUD remained significant in this model as well (F(1,38) = 5.73; p = 0.022; η2 = 0.131). We also examined the baseline alpha activity by extracting the average absolute alpha power from the baseline period, and neither AUD nor CUD showed significant effects (all ps > 0.10) using the same statistical model.
