What can they do during a pediatric sleep study?

Monitor....: Doctors use polysomnography (psg or sleep study) to identify sleep problems. During sleep, the body acts differently than while awake. A sleep study monitors your child's body functions during sleep, including sleep stages, eye movements, brain waves, muscle activity, breathing, body positions and heartbeat.

Sleep study measures: A sleep study or polysomnogram measures the quality of a person's sleep. For studying the quality of sleep, small electrodes (small round metal discs) are applied to your child's scalp, on both sides of your child's head, and under your child's chin. This lets us measure your child's brain waves, eye movements, and muscle tone.