Transcranial direct current stimulation of 3 cortical targets is no more effective than placebo as treatment for fibromyalgia: a double-blind sham-controlled clinical trial

Pain Randomized Controlled Trial 2022 Jul 1;163(7):e850-e861.  doi: 10.1097/j.pain.0000000000002493. Epub 2021 Sep 23. Noelia Samartin-Veiga, Marina Pidal-Miranda, Alberto J González-Villar, Claire Bradley, Luis Garcia-Larrea, Anthony T O’Brien, María T Carrillo-de-la-Peña  Abstract Transcranial direct current stimulation (tDCS) over the primary motor cortex (M1) and the dorsolateral prefrontal cortex