1. Department of Electrical, Electronic and Information Engineering Guglielmo Marconi, University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
2. Department of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, Via Vivarelli 10, 41125 Modena, Italy
3. LAMBDA -Laboratorio Analisi del Movimento del Bambino Dis-Abile, Azienda Ospedaliera Arcispedale S. Maria Nuova and University of Modena and Reggio Emilia, Reggio Emilia, Italy
4. Department of Neuroscience, University of Modena and Reggio Emilia, Reggio Emilia, Italy