Sleep disorders are symptomatic hallmarks of a variety of medical conditions. Accurately
identifying the specific stage in which these disorders occur is particularly important for the …

Background. Sleep disorders are frequent nonmotor symptoms of Parkinson's disease (PD).
Polysomnography (PSG) has been the gold standard for its assessment. However, it …

Objective. Circadian and sleep dysfunction have long been symptomatic hallmarks of a
variety of devastating neurodegenerative conditions. The gold standard for sleep monitoring …

Purpose There is great interest in unobtrusive long-term sleep measurements using
wearable devices based on reflective photoplethysmography (PPG). Unfortunately …

Good sleep quality is of primary importance in ensuring people's health and well-being. In
fact, sleep disorders have well-known adverse effects on quality of life, as they influence …

The development of consumer sleep-tracking technologies has outpaced the scientific
evaluation of their accuracy. In this study, five consumer sleep-tracking devices, research …

Background Humans spend more than one-fourth of their life sleeping, and sleep quality has
been significantly linked to health. However, the objective examination of ambulatory sleep …

Polysomnography (PSG) is the gold standard for recording sleep. However, the standard
PSG systems are bulky, expensive, and often confined to lab environments. These systems …

Study Objectives: Portable and automated sleep monitoring technology is becoming widely
available to consumers, and one wireless system (WS) has recently surfaced as a research …

Background A need exists, from both a clinical and a research standpoint, for objective sleep
measurement systems that are both easy to use and can accurately assess sleep and wake …