1. Department of Biomedical Engineering and Center for Brain-Inspired Computing Research, Tsinghua University, Beijing 100084, China
2. Department of Neurology, Washington University in St. Louis, St. Louis, MO 63110, U.S.A.
3. Department of Biological Engineering and Center for Brain-Inspired Computing Research, Tsinghua University, Beijing 100084, China
4. Department of Neuroscience and Department of Physiology and Cellular Biophysics, Zuckerman Mind Brain Behavior Institute, Columbia University, New York, NY 10032, U.S.A.