1. Departments of Physiology and Science of Functional Recovery and Reconstruction, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan.
2. Department of Physiology, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan.
3. Department of Science of Functional Recovery and Reconstruction, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan.