Abstract Study Objectives: Light exposure, particularly blue light, is being recognized as a
potent mean to stimulate alertness and cognition in young individuals. Aging is associated …

Abstract Study Objectives: Prolonged exposure to blue wavelength light has been shown to
have an alerting effect, and enhances performance on cognitive tasks. A small number of …

The short wavelength, ie, blue light, is crucial for non-image forming effects such as
entrainment of the circadian system in humans. Moreover, many studies showed that blue …

Beyond its essential visual role, light, and particularly blue light, has numerous non-visual
effects, including stimulating cognitive functions and alertness. Non-visual effects of light …

Aging is associated with sleep and circadian alterations, which can negatively affect quality
of life and longevity. Importantly, the age-related reduction in light sensitivity, particularly in …

Acute exposure to light within the blue wavelengths has been shown to enhance alertness
and vigilance, and lead to improved speed on reaction time tasks, possibly due to activation …

Notwithstanding its effects on the classical visual system allowing image formation, light acts
upon several non-image-forming (NIF) functions including body temperature, hormonal …

Objectives Exposure to light can have acute alerting and circadian phase-shifting effects.
This study investigated the effects of evening exposure to blue-enriched polychromatic white …

Conflicting results have been reported regarding the effectiveness of light treatment (LT) in
patients with Alzheimer's disease (AD). We investigated the effectiveness of blue-enriched …

We tested the effect of different lights as a countermeasure against sleep-loss decrements in
alertness, melatonin and cortisol profile, skin temperature and wrist motor activity in healthy …