1. Key Laboratory of Child Development and Learning Science, Ministry of Education, School of Biological Science and Medical Engineering, Southeast University, Nanjing, China
2. Research Center for Brain Communication, Kochi University of Technology, Kami, Japan
3. Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka, Japan
4. Center for Mind & Brain Sciences, Hunan Normal University, Changsha, China