About the Authors

Hackjin Kim

Affiliation Division of Humanities and Social Sciences, California Institute of Technology, Pasadena, California, United States of America

Shinsuke Shimojo

Affiliation Division of Biology, California Institute of Technology, Pasadena, California, United States of America

John P O'Doherty

To whom correspondence should be addressed. E-mail: jdoherty@hss.caltech.edu

Affiliation Division of Humanities and Social Sciences, California Institute of Technology, Pasadena, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

HK, SS, and JPOD conceived and designed the experiments. HK performed the experiments. HK and JPOD analyzed the data. HK, SS, and JPOD contributed reagents/materials/analysis tools. HK and JPOD wrote the paper.