Random effects BMS results (left panels for control group, and right panels for cocaine group) of the connections modulated by the optimal bilinear modulator (memory delay). For the control group, two single‐modulation DCMs (corresponding to connections L MFG to L IFC, and L STR to L IFC, respectively) had exceedance probabilities that were at least five times greater than the mean exceedance probability of the other 40 DCMs. For the cocaine group, six single‐modulation DCMs (corresponding to connections L MFG to L IFC, L IFC to L MFG, L PPC to L IFC, L IFC to L PPC, LR SMA to L IFC, and R PPC to L STR, respectively) had exceedance probabilities that were at least five times greater than the mean exceedance probability of the other 36 DCMs. See Supporting Information Table 2 for the 42 endogenous connections that correspond to the 42 modulation model numbers.