Background Depression is a leading cause of disability worldwide and is a major contributor
to the overall global burden of disease, but its etiology is poorly understood. It has been …

Light is an important environmental factor for regulation of mood. There is a high frequency
of seasonal affective disorder in high latitudes where light exposure is limited, and bright …

Objectives Dim light at night contributes to neurodegenerative diseases by causing
neuroinflammation. In the central nervous system, the activation of microglia is a significant …

Depressive episodes are associated with disturbances in circadian rhythms, and constant
illumination has been reported to induce depressive-like behavior in rodents. Rats kept in …

Seasonal affective disorder (SAD), beyond mood changes, is characterized by alterations in
daily rhythms of behavior and physiology. The pathophysiological conditions of SAD involve …

Objectives: Ambient light has a vital impact on mood and cognitive functions. Blue light has
been previously reported to play a salient role in the antidepressant effect via melanopsin …

The impact of ambient light on mood and anxiety is best exemplified in seasonal affective
disorder, in which patients experience depression and anxiety in winter when there is less …

Light plays a direct crucial role in the switch between sleep and arousal and the regulation
of physiology and behaviour, such as circadian rhythms and emotional change. Artificial …

Recent evidence suggests that adult neurogenesis contributes to the pathophysiology of
different psychiatric disorders, including depressive disorder, anxiety disorder, and …

A healthy state of life suggests not only a disease‐free condition but also normal
psychological functioning and behaviour. To maintain a healthy life, the duration of light …