tDCS to Decrease Opioid Relapse (UH3)

The anode will be placed over the right DLPFC (F4 on the EEG 10-20 system) and the cathode over the left DLPFC65 (F3) using 25cm2 sponges at an intensity of 2mA. Stimulation will be delivered for 20 minutes via two saline-soaked surface sponge electrodes and a battery-driven, constant current stimulator (NeuroConn DC Stimulator Plus).

Same device and procedures as active tDCS with the exception that the device includes a study mode, in which subject-specific codes are entered to deliver active or sham stimulation, keeping the administrator blinded. Sham stimulation will use a method in which stimulation will be ramped up and back down over a 30-second period at the beginning and end of sham tDCS.