Intervention Effect of High-Definition Transcranial Direct Current Stimulation (HD-tDCS) on Non-suicidal Self-injury (NSSI)

tDCS, or Transcranial Direct Current Stimulation, is a non-invasive brain stimulation technique that involves applying a small, constant direct current through electrodes placed on the scalp to modulate neuronal activity in specific brain regions.

In the sham condition, tDCS was delivered only during the ramp-up and ramp-down periods (15s and 15s); no current was delivered during the 20-minute intervention.