“…For methodical detail of the protocol, see the companion paper “Middle cerebral artery blood flow stability during and after high-definition transcranial electrical stimulation: a randomized sham-controlled clinical trial.” [4] . In brief, we assessed the mean middle cerebral arteries' blood flow velocity (MCA-BFv) of eleven healthy right-handed adults (6 women; mean age 31 ± 5.6 years old) before, during, and after high-definition transcranial direct current stimulation (HD-tDCS).…”