1. Laboratory of Fear and Anxiety Disorder; Institute of Life Science, Nanchang University; Nanchang 330031 China
2. Department of Pharmacology; Nanchang University; Nanchang 330031 China
3. Department of Psychiatry; School of Medicine; Showa University. 6-11-11; Tokyo 157-8577 Japan
4. Department of Anatomy and Neurobiology; Kyoto Prefectural University of Medicine; Kyoto 602-8566 Japan