1. Coma Science Group, Cyclotron Research Center, University of Liège, Liège, Belgium.
2. Department of Neurology, University of Liège, Liège, Belgium.
3. Department of Anesthesia and Intensive Care Medicine, CHU Sart Tilman Hospital, University of Liège, Liège, Belgium.
4. Department of Anesthesia and Intensive Care Medicine, CHR Citadelle, University of Liège, Liège, Belgium.
5. Physics & Astronomy Department, Mind & Brain Institute, Western University, London, Canada.