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Significance of considering respiratory movement in estimating sleep stage
Haipeng Liu,Yuhang Xu,Dingchang Zheng 대한의용생체공학회 2020 Biomedical Engineering Letters (BMEL) Vol.10 No.2
We read with great interest the paper “Sleep stage estimationmethods using a camera for home use” by Nochino et al. [ 1 ]. The paper proposed a method of sleep stage (wake, light,deep, and rapid-eye movement (REM)) estimation using anoff -the-shelf camera. Recognizing its potential in providingconvenient daily sleep monitoring for home use, we wouldlike to open a productive discussion concerning the methodologicalerrors and limitations presented in the paper.