Major depressive disorder (MDD) remains the most prevalent mental disorder and a leading
cause of disability, affecting approximately 100 million adults worldwide. The disorder is …

In addition to its role in vision, light exerts strong effects on behavior. Its powerful role in the
modulation of mood is well established, yet remains poorly understood. Much research has …

Night shift work can associate with an increased risk for depression. As night workers
experience a 'misalignment'between their circadian system and daily sleep–wake …

Purpose The aim of the study was to investigate associations between sleep disturbances
and mental health in adolescents. Methods Data are from a national sample of 11,670 US …

Abstract Study Objectives To determine how sleepiness and sleep deprivation drive the
motivation to engage in different behaviors. Methods We studied the sleepiness of 123 …

Light exerts powerful biological effects on mood regulation. Whereas the source of photic
information affecting mood is well established at least via intrinsically photosensitive retinal …

Background Sleep duration and chronotype (ie, morningness–eveningness) are associated
with increased depression and anxiety risk, but differences in individual sleep need and …

Objectives We aimed to evaluate depressive feelings and their correlations in children and
adolescents with narcolepsy collected in national reference centers for narcolepsy. Methods …

Background Daytime napping has been postulated as both a protective and a risk factor for
depression in previous studies. In addition to these conflicting results, research gaps also …

Background: To date, few studies have investigated the prevalence and risk factors of
excessive daytime sleepiness (EDS) in major depression. Thus, the aim of the present study …