就寝時無拘束計測生体データによる睡眠段階の推定

抄録

This paper describes a method to judge the sleep stages given by the 6 categories i.e., wake, REM sleep, Non-REM sleep of 1st, 2nd, 3rd and 4th stages. The conventional Rechtschaffen & Kales method using an expensive and sophisticated polygraph is the international standard to judge the sleep stages, but it gives strong physical and mental stress. The proposed method estimates the stages from the heartbeats and body motions in the sleep, non-invasively measured by a simple sensor. From the knowledge that the heartbeats change is strongly correlated with the sleep stages, the sleep stages given by the 6 categories are determined by categorizing the change in the heartbeats and body motion occurring for each sleep stages. The estimated sleep stages for the clinical trials over 27 nights and for 8 samples show satisfactory results to be used at home.