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Light level and duration of exposure determine the impact of self-luminous tablets on melatonin suppression
Author(s):
Brittany Wood
,
Mark S. Rea
,
Barbara Plitnick
,
Mariana G. Figueiro
Publication date
Created:
March 2013
Publication date
(Print):
March 2013
Journal:
Applied Ergonomics
Publisher:
Elsevier BV
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There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
Exposure to light from self-luminous displays may be linked to increased risk for sleep disorders because these devices emit optical radiation at short wavelengths, close to the peak sensitivity of melatonin suppression. Thirteen participants experienced three experimental conditions in a within-subjects design to investigate the impact of self-luminous tablet displays on nocturnal melatonin suppression: 1) tablets-only set to the highest brightness, 2) tablets viewed through clear-lens goggles equipped with blue light-emitting diodes that provided 40 lux of 470-nm light at the cornea, and 3) tablets viewed through orange-tinted glasses (dark control; optical radiation <525 nm ≈ 0). Melatonin suppressions after 1-h and 2-h exposures to tablets viewed with the blue light were significantly greater than zero. Suppression levels after 1-h exposure to the tablets-only were not statistically different than zero; however, this difference reached significance after 2 h. Based on these results, display manufacturers can determine how their products will affect melatonin levels and use model predictions to tune the spectral power distribution of self-luminous devices to increase or to decrease stimulation to the circadian system. Copyright © 2012 Elsevier Ltd and The Ergonomics Society. All rights reserved.
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Stress signalling in stem cells
Author and article information
Journal
Title:
Applied Ergonomics
Abbreviated Title:
Applied Ergonomics
Publisher:
Elsevier BV
ISSN (Print):
00036870
Publication date Created:
March 2013
Publication date (Print):
March 2013
Volume
: 44
Issue
: 2
Pages
: 237-240
Article
DOI:
10.1016/j.apergo.2012.07.008
PubMed ID:
22850476
SO-VID:
b6f43304-99e9-4926-8c72-cbc83eba53b2
Copyright ©
© 2013
License:
https://www.elsevier.com/tdm/userlicense/1.0/
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