1. Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630–0101, Japan (M.I., T.E., H.S., M.K., T.S., K.K., A.I., S.T.); Research Institute for Electronic Science, Hokkaido University, Sapporo, Hokkaido 060–0812, Japan (T.N.); and Brain Science Institute, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama 351–0198, Japan (H.M., A.M.)