[1] Italian Inst Technol IIT, Dept Neurosci & Brain Technol, I-16163 Genoa, Italy
[2] Univ Genoa, Dept Biophys & Elect Engn DIBE, Neuroengn & Bionano Technol Grp NBT, I-16145 Genoa, Italy
[3] Univ Paris 06, Lab Neurobiol Adapt Proc, F-75005 Paris, France
[4] CALTECH, Broad Fellows Program, Pasadena, CA 91125 USA
[5] CALTECH, Div Biol, Pasadena, CA 91125 USA