noun
polysomnography; sleep study
Medical test that records brain waves, blood oxygen level, heart rate, breathing, and eye and leg movements during sleep.
睡眠ポリグラフ検査は、睡眠時無呼吸症候群の診断に用いられる。
Polysomnography is used to diagnose sleep apnea syndrome.
I underwent a polysomnography at the hospital last night.