tDCS to Decrease Opioid Relapse (UG3)

In the current proposal, the investigators will measure behavioral and brain responses following transcranial direct current stimulation (tDCS) to the dorsolateral prefrontal cortex (DLPFC) (anode on right DLPFC, cathode on the left DLPFC) delivered during cognitive control network (CCN) priming. Participants with opioid dependence, in the first month of prescribed buprenorphine or methadone, will be assessed twice using electroencephalographic (EEG), once prior to tDCS+CCN priming and again at the completion of 5 sessions of tDCS+CCN priming (one week later). EEG will provide validation of expected changes in these networks following tDCS stimulation of the DLPFC.