A sleep study, also known as a polysomnography, is a diagnostic test that records various body functions during sleep. The test is usually done in a sleep center or hospital and is used to evaluate sleep disorders, such as sleep apnea, narcolepsy, and restless leg syndrome.

During a sleep study, you will be connected to various sensors and electrodes that monitor your brain waves, eye movements, heart rate, breathing, and muscle activity. This information is recorded and analyzed by a technician or a sleep specialist.

The test usually involves spending the night at the sleep center, where you will be observed and monitored by the technician. The technician will be able to see and hear you through a camera and intercom system in case you need assistance during the night.

The results of a sleep study can help diagnose sleep disorders and provide information on the severity and frequency of the condition. Treatment options for sleep disorders may include lifestyle changes, medication, or the use of a device such as a continuous positive airway pressure (CPAP) machine to help keep your airway open during sleep.

Overall, a sleep study is a safe and effective way to diagnose and manage sleep disorders, and can significantly improve your quality of life.