6533b82bfe1ef96bd128e199
RESEARCH PRODUCT
Indoor artificial lighting: Prediction of the circadian effects of different spectral power distributions.
Alessia PedaceLaura BelliaGiuseppe Barbatosubject
Light sourceArtificial lightcircadian stimulus spectral power distribution circadian systemComputer scienceMELATONIN CLOCK PHOTOTRANSDUCTION PHOTORECEPTORS MELANOPSIN RHYTHMS HUMANS ROD circadian effects SPDs light sources non visual effectsAcousticsCircadian rhythmElectrical and Electronic EngineeringStimulus (physiology)RETINAL GANGLION-CELLS SYSTEMElectrical and Electronic Engineering circadian rhythmSimulationdescription
The study presented in this paper aims to evaluate if and how the environment affects the circadian impact of a light source by predicting circadian stimulus (CS) resulting from the exposure to different light scenes, using equations reported in studies by Rea et al. The main findings are: (1) Above 600 lx at eye level the increase of CS is little; (2) Between 50 lx and 200 lx at the eye level an increase of only 50 lx determines a significant increase of CS; (3) Light sources with correlated colour temperatures between 2900 K and 4200 K have similar impacts on the circadian system according to the calculation method used; (4) Even an almost neutral environment affects the circadian impact of a light source.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-01-01 |