1. State Key Laboratory of Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China
2. Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing, Xi’an University of Technology, Xi’an 710048, Shaanxi, People’s Republic of China
3. Institute for Complex Systems and Mathematical Biology, King’s College, University of Aberdeen, Aberdeen AB24 3UE, United Kingdom
4. School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287-5706, USA
5. Department of Physics, Arizona State University, Tempe, Arizona 85287-5706, USA
6. The Mind Research Network, Albuquerque, New Mexico 87131, USA
7. Department of Neurology, University of New Mexico, Albuquerque, New Mexico 87131, USA
8. Department of Rehabilitation Medicine, Shanghai Bei Zhan Hospital, Shanghai 200070, People’s Republic of China
9. Institute of Biomedical Engineering, Key Laboratory of Biomedical Information Engineering of Education Ministry, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, People’s Republic of China