作者单位:Univ Roma La Sapienza, Dept Clin Med, Policlin Umberto I, I-00161 Rome, Italy[1]IRCCS Fdn Neurol Inst Carlo Besta, Dept Neurophysiol, Milan, Italy[2]Univ Roma La Sapienza, Dept Psychol, I-00185 Rome, Italy[3]Univ Roma La Sapienza, Dept Neurol & Psychiat, I-00185 Rome, Italy[4]