1. Key Laboratory for NeuroInformation of Ministry of Education, Center for Information in Medicine; University of Electronic Science and Technology of China; Chengdu Sichuan 610054 China
2. School of Foreign Languages, University of Electronic Science and Technology of China; Chengdu Sichuan 610054 China
3. Department of Psychiatry; Division of Medical Psychology, University of Bonn; 53105 Bonn Germany
4. Department of Radiology, Huaxi MR Research Center; West China Hospital of Sichuan University; Chengdu 610041 China