Lighting based on light-emitting diodes (LEDs) not only is more energy efficient than
traditional lighting, but also enables improved performance and control. The colour, intensity …

Architectural lighting has potent biological effects but applied lighting practices that
capitalize on this potential have been limited. In this review, we endeavor to consolidate and …

Periodic, well timed exposure to light is important for our health and wellbeing. Light, in
particular in the blue part of the spectrum, is thought to affect alertness both indirectly, by …

Experimental and interventional studies show that light can regulate sleep timing and
sleepiness while awake by setting the phase of circadian rhythms and supporting alertness …

At its best, human-centric lighting considers the visual and non-visual effects of light in
support of positive human outcomes. At its worst, it is a marketing phrase used to …

LED light sources have a discontinuous light spectrum with a prominent 'blue'peak between
450 and 470 nm that influences non-image forming responses in humans. We tested an …

Light, through its non-imaging forming effects, plays a dominant role on a myriad of
physiological functions, including the human sleep–wake cycle. The non-image forming …

This paper reports the results of a systematic review conducted on articles examining the
effects of daytime electric light exposure on alertness and higher cognitive functions. For …

Nowadays lighting projects often include temporal variations of the light, both spectrally and
in terms of intensity to consider non-visual effects of light on people. However, as of today …

Light use is rising steeply, mainly because of the advent of light-emitting diode (LED)
devices. LEDs are frequently blue-enriched light sources and may have different impacts on …