Effects of transcranial direct current stimulation on the μ-opioid system — “possibly an instant increase of endogenous μ-opioid release” User isosafrole, in the psychopharmacology subreddit, 06 Jan 2013
Immediate Effects of tDCS on the μ-Opioid System of a Chronic Pain Patient | Frontiers in Neuropsychiatric Imaging and Stimulation User kbrc, in the DrugNerds subreddit, 03 Jan 2013