What sensors are applied during a sleep test?
Most of the sensors/electrodes are small, gold plated disks that are applied to the scalp and skin. Blood oxygen level is monitored using a small, lightweight, cushioned plastic clip that is kept on a finger or applied to an ear lobe. Respiration is closely monitored by using a thin, plastic sensor that is placed between the nose and the upper lip. Breathing effort is recorded using belts placed around the chest and abdomen.
