Duration of major depressive episodes and sleep architecture: an exploratory study.

Growing evidence supports sleep-wake disruption as a mechanism involved in mood disorders pathogenesis. Duration of depressive episodes varies widely, and longer depressive episodes have been connected to worse outcomes. We aimed to explore if the length of depressive episodes is related to objective modifications of sleep features.

Sleep architecture modifications after double chronotherapy: A case series of bipolar depressed inpatients.

The aim of this study is to objectively evaluate sleep architecture changes of depressed bipolar subjects treated with chronoterapeutics. Eleven depressed bipolar inpatients received 3 cycles of Total Sleep Deprivation, followed by daily light therapy sessions for one week. Polysomnography was performed before and after the treatment.