This study analyses the spectral components of the heart rate fluctuations of a new contact-less technology for sleep evaluation. Both heart beat interval (HBI) and movement activity were extracted from the multichannel ballistocardiographic (BCG) measurements, based on Emfit sensor foils placed into bed mattress. Powers spectral densities (PSD) of HBI have been compared with the ones obtained from the standard ECG during sleep stage 2. In addition, spectral features obtained from the contact-less technology and standard ECG has been used to automatically classify the sleep macrostructure through a time-varying autoregressive model and a Hidden Markov Model. Whole night recordings from six subjects were analyzed in this study. Spectral components did not show significant differences between the two measurements. Further, contactless technology achieved a total accuracy of 83 % and kappa index of 0.42, while standard ECG achieved an accuracy of 84 % and kappa index of 0.43 when compared to clinical sleep staging from polysomnography.
|Title of host publication||31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2009|
|Publisher||IEEE Institute of Electrical and Electronic Engineers|
|Publication status||Published - 2009|
|MoE publication type||A4 Article in a conference publication|
|Event||31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC '09 - Minneapolis, United States|
Duration: 2 Sep 2009 → 6 Sep 2009
|Conference||31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC '09|
|Abbreviated title||EMBC '09|
|Period||2/09/09 → 6/09/09|
- automatic sleep scoring
- bed sensor
- heart rate variability (HRV)
Mendez, M. O., Matteucci, M., Cerutti, A. M., Bianchi, A., & Kortelainen, J. M. (2009). Automatic detection of sleep macrostructure based on bed sensors. In 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2009 (pp. 5555-5558). IEEE Institute of Electrical and Electronic Engineers .