Estimation of sleep stages in a healthy adult population from optical plethysmography and accelerometer signals
| Autor: | Zachary Beattie, Atiyeh Ghoreyshi, Allison Maya Russell, A Statan, Alexandros Pantelopoulos, Y Oyang, Conor Heneghan |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male medicine.medical_specialty Physiology Biomedical Engineering Biophysics Electroencephalography Audiology Accelerometer 03 medical and health sciences 0302 clinical medicine Physiology (medical) Photoplethysmogram Accelerometry medicine Humans Heart rate variability Photoplethysmography Slow-wave sleep Sleep Stages medicine.diagnostic_test business.industry Signal Processing Computer-Assisted Actigraphy Sleep in non-human animals Healthy Volunteers 030228 respiratory system Physical therapy Female business 030217 neurology & neurosurgery |
| Zdroj: | Physiological Measurement. 38:1968-1979 |
| ISSN: | 1361-6579 |
| DOI: | 10.1088/1361-6579/aa9047 |
| Popis: | OBJECTIVE This paper aims to report on the accuracy of estimating sleep stages using a wrist-worn device that measures movement using a 3D accelerometer and an optical pulse photoplethysmograph (PPG). APPROACH Overnight recordings were obtained from 60 adult participants wearing these devices on their left and right wrist, simultaneously with a Type III home sleep testing device (Embletta MPR) which included EEG channels for sleep staging. The 60 participants were self-reported normal sleepers (36 M: 24 F, age = 34 ± 10, BMI = 28 ± 6). The Embletta recordings were scored for sleep stages using AASM guidelines and were used to develop and validate an automated sleep stage estimation algorithm, which labeled sleep stages as one of Wake, Light (N1 or N2), Deep (N3) and REM (REM). Features were extracted from the accelerometer and PPG sensors, which reflected movement, breathing and heart rate variability. MAIN RESULTS Based on leave-one-out validation, the overall per-epoch accuracy of the automated algorithm was 69%, with a Cohen's kappa of 0.52 ± 0.14. There was no observable bias to under- or over-estimate wake, light, or deep sleep durations. REM sleep duration was slightly over-estimated by the system. The most common misclassifications were light/REM and light/wake mislabeling. SIGNIFICANCE The results indicate that a reasonable degree of sleep staging accuracy can be achieved using a wrist-worn device, which may be of utility in longitudinal studies of sleep habits. |
| Databáze: | OpenAIRE |
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