| http://www.w3.org/ns/prov#value | - The PSG or polysomnogram, as the test is referred to, measures or monitors many body functions including the eye movements (EOG), brain (EEG), heart rhythm (ECG), skeletal muscle activation (EMG), and breathing or respiratory effort during sleep, and based on the observations, the doctor will decide whether the person who had undergone PSG suffers from obstructive sleep apnea (OSA) or any of its n
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