[1] Scuola Int Super Studi Avanzati, Visual Neurosci Lab, Trieste, Italy
[2] Harvard Univ, Dept Mol & Cellular Biol, Cambridge, MA 02138 USA
[3] Harvard Univ, Ctr Brain Sci, Cambridge, MA 02138 USA
[4] RIKEN Brain Sci Inst, Lab Neural Circuit & Behav, Wako, Saitama, Japan