1. Bio/CMOS Interfaces Laboratory (BCI), École Polytechnique Fédérale de Lausanne, Neuchâtel, Switzerland
2. Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
3. Medtronic Chair in Neuroengineering, Center for Neuroprosthetics and Institute of Bioengineering, School of Engineering, École Polytechnique Fédérale de Lausanne, Geneva, Switzerland