1. School of Psychological and Cognitive Sciences, Peking University, Beijing, China
2. Department of Psychological & Brain Sciences, Boston University, Boston, MA, USA
3. Beijing Key Laboratory of Behavior and Mental Health, Peking University, Beijing, China
4. PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
5. Key Laboratory of Machine Perception (Ministry of Education), Peking University, Beijing, China