1 Institute of Neuroscience, State Key Laboratory of Neuroscience, CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai 200031, China.
2 University of the Chinese Academy of Sciences, Beijing 100049, China.
3 Shanghai Center for Brain Science and Brain-Inspired Intelligence Technology, Shanghai 200031, China. E-mail: xiaohong.xu@ion.ac.cn.