About the Authors

Masaki Nishida

Affiliation Sleep and Neuroimaging Laboratory, Department of Psychiatry, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America

Matthew P. Walker

To whom correspondence should be addressed. E-mail: mwalker@hms.harvard.edu

Affiliation Sleep and Neuroimaging Laboratory, Department of Psychiatry, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MW MN. Performed the experiments: MW MN. Analyzed the data: MW MN. Contributed reagents/materials/analysis tools: MW MN. Wrote the paper: MW MN.