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Chronobiology and SAD


The chronobiology and neurobiology of winter seasonal affective ...

SAD is a mood disorder characterized by the predictable onset of depression in the fall/winter months, with spontaneous remissions in the spring/summer period.

Chronobiology and SAD | The History of Modern Biomedicine

Seasonal affective disorder (SAD) was first described as such by psychiatrist Norman Rosenthal and colleagues in 1984. Thirty years after that publication, ...

Low circadian amplitude and delayed phase are linked to seasonal ...

Highlights. •. Symptoms of seasonal affective disorder (SAD) are linked to in-vivo circadian mRNA oscillations. •. SAD symptoms are associated with low ...

Circadian rhythm disruption and mental health - Nature

A bidirectional relationship exists between mood disorders and circadian rhythms. Mood disorders are often associated with disrupted circadian clock-controlled ...

The circadian basis of winter depression - PNAS

Abstract. The following test of the circadian phase-shift hypothesis for patients with winter depression (seasonal affective disorder, or SAD) ...

When chronobiology met economics: Seasonal affective disorder ...

Standard economic theory presumes invariant preferences. We refute this presumption on chronobiological grounds, documenting the impact of seasonal ...

Chronobiology and mood disorders - Taylor & Francis Online

Many circadian rhythms measured in depressive patients are abnormal: earlier in timing, diminished in amplitude, or of greater variability.

Risk for Seasonal Affective Disorder (SAD) Linked to Circadian ...

We use machine learning and statistical analyses to determine the circadian gene variants and clinical features most highly associated with symptoms of ...

Circadian Clock-Related Polymorphisms in Seasonal Affective ...

Disturbed circadian rhythms have been observed in seasonal affective disorder (SAD). The aim of this study was to further investigate this ...

Seasonal Affective Disorder: An Overview - Taylor & Francis Online

This hypothesis predicts that the symptoms of SAD will improve if the circadian rhythms can be phase-advanced. There is some experimental support for this. SAD ...

The role of the circadian system in the etiology of depression

A clear link exists between disruptions of the circadian system and mood disorders. The suprachiasmatic nucleus in the brain plays a key role in circadian ...

Chronobiology and Treatment in Depression | SpringerLink

Treatments acting on sleep and circadian rhythms are promising antidepressant treatments as they may relieve numerous sleep homeostasis abnormalities.

Chronobiology of Depression - History - University of Kentucky

The concept of the so-called seasonal affective disorder (SAD) as a disruption of the circadian rhythm precipitated by a deficiency of environmental light ...

The Implications of Chronobiology for Psychiatry - Psychiatric Times

Periodicity is most striking in affective disorders: illness recurrence ranges from seasonal depression to rapid-cycling manic-depressive ...

Circadian Rest-Activity Disturbances in Seasonal Affective Disorder

Conclusions: Patients with SAD have circadian restactivity rhythms that are significantly phase delayed and more poorly entrained to the 24-hour day.

Circadian rhythm disturbances in depression - Germain - 2008

Depressed patients often show altered circadian rhythms, sleep disturbances, and diurnal mood variation. Chronotherapies, including bright light ...

Circadian rhythms and mood disorders: Time to see the light: Neuron

Summary. The importance of time is ever prevalent in our world, and disruptions to the normal light/dark and sleep/wake cycle have now become ...

Exploring the Relationship Between Circadian Rhythm Shifts and ...

Postpartum depression is a prevalent and debilitating mood disorder that affects a significant number of women after childbirth. Emerging ...

Circadian rhythms and mood disorders: Time to see the light

All mood disorders, including seasonal affective disorder (SAD), major depressive disorder (MDD), and bipolar disorder (BD), are strongly associated with ...

Disruption of Circadian Rhythms: A Crucial Factor in the Etiology of ...

Circadian factors might play a crucial role in the etiology of depression. It has been demonstrated that the disruption of circadian rhythms ...