1. Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, Shiga, Japan
2. Graduate School of Informatics and Engineering, University of Electro-Communications, Tokyo, Japan
3. Department of Sport and Medical Science, Kokushikan University, Tokyo, Japan
4. Department of Anatomy and Physiology, Kansas State University, Manhattan, Kansas, United States
5. Department of Kinesiology, Kansas State University, Manhattan, Kansas, United States
6. Center for Neuroscience and Biomedical Engineering, University of Electro-Communications, Tokyo, Japan