Subcallosal Cingulate DBS for Treatment-Resistant Depression
A 2026 systematic review of subcallosal cingulate (SCC) functional connectivity found 28 qualifying resting-state fMRI studies in depression: 21 rTMS/iTBS studies, 4 ECT studies, 3 focused-ultrasound studies, and 0 DBS or tDCS studies.1 That number is the useful correction: SCC DBS may still be biologically plausible, but the current fMRI connectivity literature mostly explains noninvasive …