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

tACS is described as a non-invasive form of brain stimulation that uses a low-intensity, alternating current applied directly to the head through scalp electrodes.

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