“Transcranial Direct Current Stimulation and EEG-Alpha Power in Elderly Undergoing Elective on-Pump CABG: Design of a Pilot Exploratory Proof-of-Concept Trial”. Principles and Practice of Clinical Research 2, no. 2 (November 8, 2016). Accessed January 31, 2026. https://www.journal.ppcr.org/index.php/ppcrjournal/article/view/42.