1. Computational Neurobiology Laboratory, The Salk Institute for Biological Studies 1 , 10010 North Torrey Pines Road, La Jolla, California 92037, USA
2. Institute for Neural Computation, University of California San Diego 2 , La Jolla, California 92093, USA
3. Department of Neurology, Massachusetts General Hospital and Harvard Medical School 3 , Boston, Massachusetts 02114, USA
4. Department of Psychology, University of Oslo 4 , Forskningsveien 3A, 0373 Oslo, Norway
5. RITMO Centre for Interdisciplinary Studies in Rhythm, Time and Motion, University of Oslo 5 , Forskningsveien 3A, 0373 Oslo, Norway
6. Laboratório de Modelagem, Análise e Controle de Sistemas Não Lineares, Universidade Federal de Minas Gerais 6 , Av. Antônio Carlos 6627, 31270-901 Belo Horizonte, MG, Brazil
7. Division of Biological Sciences, University of California San Diego 7 , La Jolla, California 92093, USA