Circadian Light

Details

• Personal Author:
  Bierman A ; Bullough, John D. ; Figueiro MG ; Rea MS
• Description:
  The present paper reflects a work in progress toward a definition of circadian light, one that should be informed by the thoughtful, century-old evolution of our present definition of light as a stimulus for the human visual system. This work in progress is based upon the functional relationship between optical radiation and its effects on nocturnal melatonin suppression, in large part because the basic data are available in the literature. Discussed here are the fundamental differences between responses by the visual and circadian systems to optical radiation. Brief reviews of photometry, colorimetry, and brightness perception are presented as a foundation for the discussion of circadian light. Finally, circadian light (CLA) and circadian stimulus (CS) calculation procedures based on a published mathematical model of human circadian phototransduction are presented with an example. [Description provided by NIOSH]
• Subjects:
  Circadian Rhythm Lighting Occupational Health Safety
• Keywords:
  Biological Rhythms Circadian Rhythms Hormone Activity Light Waves Optic System Visual Perception
• ISSN:
  1740-3391
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Massachusetts ; New York ; OSHA Region 1 ; OSHA Region 2
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  2
• Volume:
  8
• NIOSHTIC Number:
  nn:20059595
• Citation:
  J Circadian Rhythms 2010 Feb; 8:2
• Contact Point Address:
  Mark S. Rea, Lighting Research Center, Rensselaer Polytechnic Institute, 21 Union Street, Troy, NY 12180, USA
• Email:
  ream@rpi.edu
• Federal Fiscal Year:
  2010
• NORA Priority Area:
  Healthcare and Social Assistance
• Performing Organization:
  Brigham and Women's Hospital
• Peer Reviewed:
  True
• Start Date:
  20050901
• Source Full Name:
  Journal of Circadian Rhythms
• End Date:
  20110228
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:7185aa2f78e6a3aa7b8834836334353d980c61f97560c4279ad9894148e17f83a7c43734b2125c72ebb7a69c54575947497c4ddc87659419d7d61af3e526fe27
• Download URL:
  https://stacks.cdc.gov/view/cdc/223762/cdc_223762_DS1.pdf
• File Type:
  [PDF - 522.12 KB ]