1. Department of Neurology, Campus Bio-Medico University, Rome, Italy
2. Biomedical Robotics and Biomicrosystems Lab., University Campus Bio-Medico, Rome, Italy
3. LET's – ISTC – CNR, Ospedale Fatebenefratelli, Isola Tiberina, Rome, Italy
4. Institute of Neuroscience, Newcastle University, Medical School, Newcastle upon Tyne, UK
5. Casa di Cura S. Raffaele, Cassino and IRCCS S. Raffaele-Pisana, Rome, Italy
6. Institute of Neurology, Catholic University, Rome, Italy