1. Non-Invasive Brain Stimulation Unit, Department of Behavioral and Clinical Neurology, Fondazione Santa Lucia IRCCS, 00179 Rome, Italy
2. Section of Human Physiology, University of Ferrara, 44121 Ferrara, Italy
3. Department of Systems Medicine, University of Rome Tor Vergata, 00133 Rome, Italy
4. Department of Clinical and Behavioral Neurology, Fondazione Santa Lucia IRCCS, 00179 Rome, Italy
5. Institute of Neurology, Catholic University of the Sacred Heart, 00168 Rome, Italy