1. Center for Translational Neurophysiology of Speech and CommunicationIstituto Italiano di Tecnologia 44121 Ferrara Italy
2. Section of Human PhysiologyUniversity of Ferrara 44121 Ferrara Italy
3. Materials Characterization FacilityIstituto Italiano di Tecnologia 16163 Genova Italy
4. Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)CNR 40129 Bologna Italy
5. Department of Life SciencesUniversity of Modena and Reggio Emilia 41125 Modena Italy