Bright-light therapy (BLT) is established as the treatment of choice for seasonal affective
disorder/winter type (SAD). In the last two decades, the use of BLT has expanded beyond …

The serotonin and circadian systems are principal regulatory networks of the brain. Each
consists of a unique set of neurons that make widespread neural connections and a defined …

Background Photoreceptor cells containing melanopsin play a role in the phase-shifting
effects of short-wavelength light. In a previous study, we compared the standard light …

Alteration of the sleep–wake cycle and of the sleep structure are core symptoms of a major
depressive episode, and occur both in course of bipolar disorder and of major depressive …

Seasonal affective disorder (SAD) is characterized by depressive episodes during winter
that are alleviated during summer and by morning bright light treatment. Currently, there is …

OBJECTIVES: Seasonal affective disorder (SAD) is characterized by a mood lowering in
autumn and/or winter followed by spontaneous remission in spring or summer. Bright light …

The biological need for lighting by an individual differs from the merely visual purpose, such
as viewing objects and doing work or movement. Lack of adequate daylight for biological …

It is well-known that the light/dark cycle incident on the retina regulates the timing of the
human circadian system. Disruption of a regular, 24-hour pattern of light and dark can …

Background: Available treatments for anxiety have limitations and/or side effects. The aim of
this study was to examine the influence of bright light exposure as a treatment in high …

6. Dewan K, Benloucif S, Reid KJ, Wolfe L, Zee P. Light-induced changes of the circadian
clock of humans: increasing duration is more effective than increasing light intensity. Sleep …