Polysomnography, also known as a sleep study, is a test in which a doctor observes you while you’re sleeping. Doctors use this test to identify possible sleep disorders. A doctor may perform different ...

People who score poorly on a sleep test are more likely to show signs of faster brain ageing, a new study says. Studies have shown a link between poor sleep and dementia but it has remained unclear if ...

For people with a certain sleep disorder, a simple blood test could help predict the development of dementia years before ...

What is a sleep study? A sleep study, also known as a polysomnogram, is a diagnostic test that monitors various body functions while a person is asleep. It is most commonly used to diagnose sleep ...

Medicare covers sleep tests when you show clinical signs and symptoms of specific disorders, including sleep apnea, narcolepsy, or parasomnia. Medicare covers different types of sleep studies (Types I ...