title: Circadian Rhythms: The Price of Electric Light.
abstract: A new study demonstrates that modern electric lighting has caused the near-24-hour biological clock to be set to a later time and that humans physiologically respond to seasonal changes in day length under conditions of natural light exposure.
authors.affiliation: Departments of Psychiatry and Medicine, Oregon Health and Science University, Oregon Institute of Occupational Health Sciences, Portland VA Medical Center, Portland, Oregon 97239, USA. Electronic address: emensj@ohsu.edu.
authors.forename: Jonathan S
authors.initials: JS
authors.lastname: Emens
mesh_terms: D001683:Biological Clocks; D002940:Circadian Rhythm; D006801:Humans; D008029:Lighting; D017440:Photoperiod; D012621:Seasons