[1] Devmtl. Neurobiology Laboratory, Brain Science Institute, Inst. of Phys. and Chemical Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
[2] Department of Molecular Neurobiology, Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
[3] Calciosignal Net Project, Exploratory Res. for Adv. Technology, Japan Sci. and Technol. Corporation, 2-28-8 Honkomagome, Bunkyo-ku, Tokyo 113-0021, Japan