About the Authors

Els van der Helm

Affiliation Sleep and Neuroimaging Laboratory, Department of Psychology and Helen Wills Neuroscience Institute, University of California, Berkeley, California, United States of America

Ninad Gujar

Affiliation Sleep and Neuroimaging Laboratory, Department of Psychology and Helen Wills Neuroscience Institute, University of California, Berkeley, California, United States of America

Masaki Nishida

Affiliations Sleep and Neuroimaging Laboratory, Department of Psychology and Helen Wills Neuroscience Institute, University of California, Berkeley, California, United States of America, Section of Psychiatry and Behavioral Science, Tokyo Medical and Dental University, Yushima, Bunkyo, Tokyo, Japan

Matthew P. Walker

mpwalker@berkeley.edu

Affiliation Sleep and Neuroimaging Laboratory, Department of Psychology and Helen Wills Neuroscience Institute, University of California, Berkeley, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EH MPW. Performed the experiments: EH. Analyzed the data: EH NG MN. Wrote the paper: EH MPW.