[1] IRCCS Santa Lucia Fdn, Postcoma Unit, Rome, Italy
[2] IRCCS Santa Lucia Fdn, Clin Lab Expt Neurorehabil, Rome, Italy
[3] IRCCS Fdn, Neurol Inst Carlo Besta, Dept Sci, Neurol Publ Hlth & Disabil Unit, Milan, Italy
[4] Univ Roma La Sapienza, Dept Psychol, Rome, Italy