Stimulation strength (E/Eth) at individual ST in three brain ROIs for BL, BF, FM, and RUL ECT as well as CAP MST. The ROIs are (a) first dorsal interosseous (FDI), (b) dorsolateral prefrontal cortex (DLPFC), and (c) hippocampus. Bars correspond to the median stimulation strength within ROI in the left (L) or right (R) hemisphere averaged across the four subjects, and error bars give the SD across subjects. Horizontal gray dotted line demarcates the boundary between subthreshold and suprathreshold stimulation strength.