1. Laboratory of Anesthesiology & Critical Care Medicine, Translational Neuroscience Center, West China Hospital, Sichuan University, Chengdu, Sichuan, China;
2. Bioelectricity Laboratory, Department of Pharmacology, and Department of Physiology and Biophysics, School of Medicine, University of California, Irvine, California;
3. Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland; and
4. Department of Anesthesiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China