Scientific and Clinical Research Department, Neurelec, Vallauris, France, Equipe Audition, Département détudes cognitives, Ecole Normale Supérieure, Paris, France.|Computational Neuroscience Unit, Okinawa Institute of Science and Technology, Okinawa, Japan, Department of Neurobiology and the Edmond and Lily Safra Center for Brain Science, Hebrew University of Jerusalem, Jerusalem, Israel.|Department of Neurobiology and the Edmond and Lily Safra Center for Brain Science, Hebrew University of Jerusalem, Jerusalem, Israel.|Equipe Audition, Département détudes cognitives, Ecole Normale Supérieure, Paris, France, Institute for Systems Research and Department of Electrical & Computer Engineering, University of Maryland, College Park, Maryland, United States of America.