Polysomnography is a sleep study used to diagnose sleep disorders. This test records your brain waves, oxygen levels, heart rate, and breathing.
It also logs eye and leg movements during the study. If you’ve already been diagnosed with a sleep disorder, polysomnography may be used to help adjust your treatment plan. Polysomnography monitors your sleep stages and cycles to identify if or when your sleep patterns are disrupted and why. Throughout the night, your brain cycles between two phases of sleep: NREM and REM. It is normal to go through four to six sleep cycles per night. Sleep disorders can disturb this natural process. Polysomnography may be used to test for Sleep Apnea, Parasomnias, Narcolepsy, or Chronic Insomnia.