About the Authors

June C. Lo

june.lo@duke-nus.edu.sg

Affiliations Cognitive Neuroscience Laboratory, Duke-NUS Graduate Medical School, Singapore, Singapore, Surrey Sleep Research Centre, University of Surrey, Guildford, United Kingdom, Department of Psychology, University of Surrey, Guildford, United Kingdom

Derk-Jan Dijk

Affiliation Surrey Sleep Research Centre, University of Surrey, Guildford, United Kingdom

John A. Groeger

Affiliations Surrey Sleep Research Centre, University of Surrey, Guildford, United Kingdom, Department of Psychology, University of Surrey, Guildford, United Kingdom, Department of Psychology, University of Hull, Hull, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JCL DJD JAG. Performed the experiments: JCL. Analyzed the data: JCL. Contributed reagents/materials/analysis tools: JCL DJD JAG. Contributed to the writing of the manuscript: JCL DJD JAG.