An Automatic Sleep Stage Classification Algorithm Using Improved Model Based Essence Features

The automatic sleep stage classification technique can facilitate the diagnosis of sleep disorders and release the medical expert from labor-consumption work. In this paper, novel improved model based essence features (IMBEFs) were proposed combining locality energy (LE) and dual state space models...

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Veröffentlicht in:Sensors (Basel, Switzerland) Jg. 20; H. 17; S. 4677
Hauptverfasser: Shen, Huaming, Ran, Feng, Xu, Meihua, Guez, Allon, Li, Ang, Guo, Aiying
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Basel MDPI AG 19.08.2020
MDPI
Schlagworte:
Accuracy
Algorithms
Classification
Datasets
Decomposition
EEG
Methods
Neural networks
Sleep
sleep stage
state space model
wavelet packet
Wavelet transforms
Belgium
ISSN:1424-8220, 1424-8220
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Zusammenfassung:The automatic sleep stage classification technique can facilitate the diagnosis of sleep disorders and release the medical expert from labor-consumption work. In this paper, novel improved model based essence features (IMBEFs) were proposed combining locality energy (LE) and dual state space models (DSSMs) for automatic sleep stage detection on single-channel electroencephalograph (EEG) signals. Firstly, each EEG epoch is decomposed into low-level sub-bands (LSBs) and high-level sub-bands (HSBs) by wavelet packet decomposition (WPD), separately. Then, the DSSMs are estimated by the LSBs and the LE calculation is carried out on HSBs. Thirdly, the IMBEFs extracted from the DSSM and LE are fed into the appropriate classifier for sleep stage classification. The performance of the proposed method was evaluated on three public sleep databases. The experimental results show that under the Rechtschaffen’s and Kale’s (R&K) standard, the sleep stage classification accuracies of six classes on the Sleep EDF database and the Dreams Subjects database are 92.04% and 78.92%, respectively. Under the American Academy of Sleep Medicine (AASM) standard, the classification accuracies of five classes in the Dreams Subjects database and the ISRUC database reached 79.90% and 81.65%. The proposed method can be used for reliable sleep stage classification with high accuracy compared with state-of-the-art methods.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s20174677