The use of digital tools to measure physiological and behavioural variables of potential
relevance to mental health is a growing field sitting at the intersection between computer …

Highlights•Seasonal Affective Disorder (SAD) is characterized by hypersomnolence and
delayed sleep timing.•Delayed sleep timing may be circadian or behavioral.•Method of …

Sleep-related problems are prevalent in patients with psychotic disorders, yet their
contribution to fluctuations in delusional experiences is less clear. This study combined …

Sleep and circadian rhythm disruptions are symptoms of, and hypothesized underlying
mechanisms in, seasonal depression. Discrepant observational findings and mixed …

Background Previous mobile health (mHealth) studies have revealed significant links
between depression and circadian rhythm features measured via wearables. However, the …

Objectives: Explore the possible etiology of seasonal affective disorder. Review the
appropriate evaluation of seasonal affective disorder. Summarize the management options …

Background Disrupted sleep and rest-activity pattern are common clinical features in
depressed individuals. This meta-analysis compared sleep and circadian rest-activity …

Objective Although cognitive behavior therapy (CBT) is efficacious for major depression in
patients with heart failure (HF), approximately half of patients do not remit after CBT. To …

Background Hypersomnolence has been considered a prominent feature of seasonal
affective disorder (SAD) despite mixed research findings. In the largest multi-season study …

Background: In the elderly population, analysis of the circadian rhythms of social activity may
help in supervising homebound disabled and chronically ill populations. Circadian rhythms …