1 Division of Neurocritical Care, Department of Neurology, University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA. David.Fischer@pennmedicine.upenn.edu.
2 Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA. David.Fischer@pennmedicine.upenn.edu.
3 Neurointensive Care Unit, Hospital of the University of Pennsylvania, 1 Convention Ave., Philadelphia, PA, USA. David.Fischer@pennmedicine.upenn.edu.
4 Center for Neurotechnology and Neurorecovery, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
5 Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA.