1. Department of Engineering Science, Bioscience and Technology Program, University of Electro-Communications, Chofu, Japan
2. Research Fellowship for Young Scientists, Japan Society for the Promotion of Science, Tokyo, Japan
3. Center for Neuroscience and Biomedical Engineering, University of Electro-Communications, Chofu, Japan
4. Departments of Anatomy and Physiology and Kinesiology, Kansas State University, Manhattan, Kansas, United States