1. Division of Brain Sciences Keio University School of Medicine Tokyo Japan
2. Institute of Cellular Neurosciences Medical Faculty, University of Bonn Bonn Germany
3. Department of Physiology Yamagata University School of Medicine Yamagata Japan
4. Department of Neurology Keio University School of Medicine Tokyo Japan
5. Research Center for Dynamic Living Systems, Graduate School of Biostudies Kyoto University Kyoto Japan
6. Institute for Frontier Life and Medical Sciences Kyoto University Kyoto Japan