1. School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, China
2. Gansu Provincial Key Laboratory of Wearable Computing, Lanzhou University, Lanzhou 730000, China
3. School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China
4. Medical Department, The Third People’s Hospital of Tianshui, Tianshui 741000, China
5. School of Medical Technology, Beijing Institute of Technology, Beijing 100081, China
6. CAS Center for Excellence in Brain Science and Intelligence Technology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China