Alerting or Somnogenic Light: Pick Your Color.

Détails

Ressource 1Télécharger: BIB_F9A2288152BA.P001.pdf (445.10 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_F9A2288152BA
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Alerting or Somnogenic Light: Pick Your Color.
Périodique
PLoS Biology
Auteur(s)
Bourgin P., Hubbard J.
ISSN
1545-7885 (Electronic)
ISSN-L
1544-9173
Statut éditorial
Publié
Date de publication
2016
Peer-reviewed
Oui
Volume
14
Numéro
8
Pages
e2000111
Langue
anglais
Résumé
In mammals, light exerts pervasive effects on physiology and behavior in two ways: indirectly through clock synchronization and the phase adjustment of circadian rhythms, and directly through the promotion of alertness and sleep, respectively, in diurnal and nocturnal species. A recent report by Pilorz and colleagues describes an even more complex role for the acute effects of light. In mice, blue light acutely causes behavioral arousal, whereas green wavelengths promote sleep. These opposing effects are mediated by melanopsin-based phototransduction through different neural pathways. These findings reconcile nocturnal and diurnal species through a common alerting response to blue light. One can hypothesize that the opposite responses to natural polychromatic light in night- or day-active animals may reflect higher sensitivity of nocturnal species to green, and diurnals to blue wavelengths, resulting in hypnogenic and alerting effects, respectively. Additional questions remain to be clarified. How do different light wavelengths affect other behaviors such as mood and cognition? How do those results apply to humans? How does light pose either a risk or benefit, depending on whether one needs to be asleep or alert? Indeed, in addition to timing, luminance levels, and light exposure duration, these findings stress the need to understand how best to adapt the color spectrum of light to our needs and to take this into account for the design of daily lighting concepts-a key challenge for today's society, especially with the emergence of LED light technology.
Pubmed
Web of science
Open Access
Oui
Création de la notice
15/09/2016 20:57
Dernière modification de la notice
20/08/2019 17:25
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