This condition is sometimes associated with restless legs syndrome. In this sleep disorder, you involuntarily flex and extend your legs while sleeping. In this condition, your breathing repeatedly stops and starts during sleep. Sleep apnea or another sleep-related breathing disorder.Your doctor may recommend polysomnography if he or she suspects you have: Sleep disorders can disturb this sleep process. You normally go through multiple sleep cycles a night, cycling between NREM and REM sleep in about 90 minutes. After an hour or two of NREM sleep, your brain activity picks up again, and rapid eye movement (REM) sleep begins. Your eyes don't move back and forth rapidly during NREM, in contrast to later stages of sleep. During this stage, your brain waves, as recorded by electroencephalography (EEG), slow down considerably. The normal process of falling asleep begins with a sleep stage called non-rapid eye movement (NREM) sleep. One style also incorporates information on blood vessel tone. They generally record your breathing rate and airflow, as well as oxygen levels and heart rate. There are different types of home sleep apnea test devices using different combinations of sensors. Polysomnography monitors your sleep stages and cycles to identify if or when your sleep patterns are disrupted and why.
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