1. Department of Pharmacology, Kyoto University Graduate School of Medicine, Kyoto 606-8501, Japan.
2. RIKEN Brain Science Institute, Wako, Saitama 351-0198, Japan.
3. Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan.
4. Department of Molecular Neurobiology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
5. Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
6. RIKEN Center for Brain Science, Wako, Saitama 351-0198, Japan.
7. SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
8. Brain and Body System Science Institute, Saitama University, Saitama 338-8570, Japan.