About the Authors

Feng Liu

Affiliation Department of Physics, Nanjing University, Nanjing, People's Republic of China

Xiao-Jing Wang

xjwang@yale.edu

Affiliation Department of Neurobiology and Kavli Institute for Neuroscience, Yale University School of Medicine, New Haven, Connecticut, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FL XJW. Performed the experiments: FL. Analyzed the data: FL XJW. Wrote the paper: FL XJW.