The assessment of sleep stage utilizing body pressure fluctuation measured by water mat sensors

Abstract

In order to develop a brief assessment system of sleep stage for untrained users utilizing water mat pressure sensors placed in a bed, polysomnographic(PSG) recodings were compared to data obtained by present sensor. Coincident ratio were calcurated using estimated sleep stage by the sensor and polysomnographic judgement. Results showed that sleep diagram by present sensor was consistent with that by PSG.