1. Departments of Brain and Cognitive Engineering, and
2. Biomedical Engineering, Korea University, Seoul, South Korea;
3. Department of Neurosurgery, Addenbrooke’s Hospital, University of Cambridge, United Kingdom
4. Department of Neurosurgery, Stanford University School of Medicine, Palo Alto, California;
5. Department of Rehabilitation, Seoul National University Hospital, College of Medicine, Seoul, South Korea; and