1. Department of Molecular Cellular Biology, Center for Brain Science, Harvard University, Cambridge, MA 02138
2. FM Kirby Neurobiology Center, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115
3. Department of Mathematics, Boston University, Boston, MA 02215
4. International Research Center for Neurointelligence, University of Tokyo Institutes for Advanced Study, Bunkyo-ku, Tokyo 113, Japan