This is a study of sleep cycles and behavior conducted overnight in the sleep center. During polysomnography the patient is observed while sleeping. Brain waves, muscle activity, breathing, eye movements, and heart rhythms are continually graphed.
Polysomnography documents bodily processes using: electrodes to track muscle movement or tension in legs, monitors that chart heart rate and rhythms, a finger clip that monitors oxygen level in the blood, and a breathing device in the nose, mouth, or chest.
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