Content contains multitudes - It's more than arousal before sleep

Affiliations

• ¹ Department of Biobehavioral Health, Pennsylvania State University, State College, PA, USA. Electronic address: [email protected].
• ² Department of Psychiatry, University of Arizona College of Medicine, Tucson, AZ, USA.
• ³ Program in Public Health, Department of Family, Population, and Preventive Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, NY, 11768-8338, USA.
• ⁴ National Sleep Foundation, Washington, DC, USA.