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AbstractStudy Objectives. The aim of this laboratory-based study was to understand the effect of total sleep deprivation (TSD) on decision-making using a r

AbstractStudy Objectives. To investigate alterations in functional connectivity of the mediodorsal thalamic nucleus (MD) in chronic insomnia disorder (CID)

Insomnia is not only associated with poor sleep and reduced daytime functioning, but may also be an indicator of increased health risks. An international review by the European Academy of Neurology, in collaboration with MedUni Vienna, shows a link to stroke, hospital admissions and several neurological and mental health conditions. The findings were published in the high ranking journal “Sleep Medicine Reviews”.

Background: Chronic insomnia affects more than 30% of US adults, is more prevalent in women and older adults, and is strongly associated with poor mental and physical health outcomes. Poor sleep quality and intraindividual variability of sleep are recognized to be key characteristics of chronic insomnia, but longitudinal assessment of sleep is largely subjective, with no objective characterization of sleep patterns and intraindividual variability over extended periods. Objective, ecologically valid longitudinal sleep measurements are needed to help identify and manage insomnia in both clinical and population settings. Consumer sleep technologies offer a possible solution, but their clinical utility remains relatively unexplored. Objective: We aimed to evaluate the utility of a contactless, radio frequency–based device by demonstrating its ability to objectively characterize sleep in individuals with insomnia over an extended observation period in a naturalistic home environment. Methods: Eighty-three participants meeting criteria for chronic insomnia and 29 healthy good-sleeper controls underwent 8 consecutive weeks of home-based sleep monitoring using an objective, contactless, radio frequency–based sleep monitoring device. Sleep efficiency, sleep latency, intermittent wakefulness, time in bed, and total sleep time were objectively quantified as daily means and SDs. Results: Compared to healthy controls, individuals with chronic insomnia exhibited reduced sleep efficiency, increased sleep latency, and increased intermittent wakefulness. They also demonstrated significantly higher night-to-night variability (SDs) in sleep efficiency, sleep latency, and intermittent wakefulness than good-sleeper controls (all