1 Rehab Technologies, Center for Convergent Technologies, Istituto Italiano di Tecnologia, Genova, Italy.
2 Laboratory of Neuroengineering and Neurosciences, Department of Electrical Engineering, Federal University of São João Del-Rei, São João Del-Rei, Brazil.
3 Núcleo de Neurociências, Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil.