1. Neuroscience Research Institute and Department of NeurobiologySchool of Basic Medical SciencesPeking University Beijing 100083 P. R. China
2. CAS Key Laboratory of Mental HealthInstitute of Psychology Beijing 100101 China
3. Department of PsychologyUniversity of Chinese Academy of Sciences Beijing 100101 China
4. Department of NeurobiologySchool of Basic Medical SciencesCapital Medical University Beijing 100069 China
5. Key Laboratory for NeuroscienceMinistry of Education/National Health CommissionPeking University Beijing 100083 P. R. China