Joao Mariano is a medical doctor whose research focuses on neuromodulation and chronic pain. He completed a one-year research fellowship at the Harvard-affiliated Neuromodulation Program at Spaulding Rehabilitation Hospital, Boston, under the supervision of Prof. Felipe Fregni and Prof. Kevin Pacheco-Barrios, where he contributed to clinical trials investigating neuromodulation-based interventions for Parkinson's disease and chronic pain, and worked on systematic reviews and meta-analyses examining non-invasive brain stimulation techniques and their clinical applications.