1. State Key Laboratory of Cognitive Neuroscience and Learning and IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, P. R. China
2. BABRI Centre, Beijing Normal University, Beijing, P. R. China
3. Institute of Basic Research in Clinical Medicine, China Academy of Traditional Chinese Medicine, Beijing, P.R. China
4. Dongfang Hospital attached to Beijing University of Traditional Chinese Medicine, Beijing, P.R. China