Polysomnography, also called a sleep study, is a test used to diagnose sleep disorders. Polysomnography records your brain waves, the oxygen level in your blood, heart rate and breathing, as well as eye and leg movements during the study.
A sleep specialist is a medical doctor who has completed additional education and training in the field of sleep medicine. Sleep medicine focuses on sleep, sleep disorders, and sleep-related conditions, and is a subspecialty within several medical specialties, including neurology, pulmonology, internal medicine, and psychiatry.
Proper sleep plays an important role in good health. Trouble sleeping can reduce the overall quality of life and a chronic lack of sleep may worsen the severity of certain medical conditions, including epilepsy, asthma, and heart disease.