A sleep laboratory is a medical institution serving to examine the sleep of patients (polysomnography).
It consists of a specially equipped patient room and an extra room with the monitoring and recording devices.
The recording of various body functions like brain waves, movement of the eyes, respiration, muscle tension and oxygen saturation of the blood is carried out during the night.
Based on these measured values an exact profile of the individual sleep phases (e.g. vigilambulism, REM-sleep, deep sleep, short wakening reactions) can be generated.