The background luminance and colour
”to lay down the appropriate luminance levels at different colour temperatures for ambient lighting within working areas”
New research in lighting has shown that light is not only influencing the visual system – it also affects the whole body.
For more than 150 years we have considered rods and cones to be the only photo-receptors in the human eye and that these only affect the visual central areas. Four years ago a new 3rd receptor was found by David Berson at Brown University USA which in fact was the missing link in how the human health is influenced by lighting .
It is now shown that light influences different hormones in the brain where the pineal gland plays an important role in controlling the sleep hormone melatonin which is provided to the blood in the body at low light levels or in darkness. At high light levels the stress hormone cortisol is produced by the adrenal cortex which contributes to alertness.
Volledige titel: THE BACKGROUND LUMINANCE AND COLOUR TEMPERATURES INFLUENCE ON ALERTNESS AND MENTAL HEALTH
Tommy Govén, Fagerhult
Fagerhult, Åsögatan 115, SE-116 24 Stockholm, Sweden
Thorbjörn Laike, Lund University
Department of Architecture and the Build Environment, Sölvegatan 24, SE-222 62 Lund, Sweden