1 Coma Science Group, GIGA-Consciousness, University of Liège and University Hospital of Liège, Allée de l'hopital, 11-B34, 4000, Liège, Belgium. athibaut@ulg.ac.be.
2 Centre du Cerveau², University Hospital of Liège, Liège, Belgium. athibaut@ulg.ac.be.
3 Department of Neurology, Massachusetts General Hospital, Center for Neurotechnology and Neurorecovery, Harvard Medical School, Boston, MA, USA.
4 Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, MA, USA.
5 Coma Science Group, GIGA-Consciousness, University of Liège and University Hospital of Liège, Allée de l'hopital, 11-B34, 4000, Liège, Belgium.
6 Centre du Cerveau², University Hospital of Liège, Liège, Belgium.
7 Department of Psychiatry, Massachusetts General Hospital, Boston, USA.
Following electronic publication of the above-referenced manuscript, we discovered that one of the three criteria we proposed to establish command-following in the MCS+ syndrome was inadvertently omitted in some parts of the manuscript.