Fig. 3: STa and right hippocampal volume change were associated with antidepressant outcomes.

A Higher STa was associated with reduced change in depression severity at the mid-ECT assessment (eta-squared = 0.20) and differentiated bitemporal electrode placement switch. The dashed line is the cut-point (328 mA) associated with bitemporal electrode placement switch (area under the ROC curve: 0.85). B Right hippocampal volume change was associated with antidepressant outcomes (eta-squared = 0.20) and differentiated RUL response criteria (3.1% volume change, dashed red vertical line).