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Sleep Stages Clustering Using Time and Spectral Features of EEG Signals

An Unsupervised Approach
  • J. L. Rodríguez-Sotelo
  • A. Osorio-Forero
  • A. Jiménez-Rodríguez
  • F. Restrepo-de-Mejía
  • D. H. Peluffo-Ordoñez
  • J. Serrano
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10337)

Abstract

Sleep stage classification is a highly addressed issue in polysomnography; It is considered a tedious and time-consuming task if done manually by the specialist; therefore, from the engineering point of view, several methods have been proposed to perform an automatic sleep stage classification. In this paper an unsupervised approach to automatic sleep stage clustering of EEG signals is proposed which uses spectral features related to signal power, coherences, asymmetries, and Wavelet coefficients; the set of features is classified using a clustering algorithm that optimizes a cost function of minimum sum of squares. Accuracy and kappa coefficients are comparable to those of the current literature as well as individual stage classification results. Methods and results are discussed in the light of the current literature, as well as the utility of the groups of features to differentiate the states of sleep. Finally, clustering techniques are recommended for implementation in support systems for sleep stage scoring.

Keywords

Wavelet Transform Sleep Stage Automatic Classification Absolute Power Gamma Rhythm 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This study is part of the “classification of sleep stages polysomnographic recordings from feature selection methods and unsupervised clustering” coded 328-038 in 2013 at the Autonoma University of Manizales. The research groups involved are Neuroaprendizaje and Automática research groups. The translation process was in charge of the Translation Center of the Autónoma University of Manizales.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • J. L. Rodríguez-Sotelo
    • 1
  • A. Osorio-Forero
    • 2
  • A. Jiménez-Rodríguez
    • 3
  • F. Restrepo-de-Mejía
    • 1
  • D. H. Peluffo-Ordoñez
    • 4
  • J. Serrano
    • 5
  1. 1.Universidad Autónoma de ManizalesManizalesColombia
  2. 2.Universidad de los AndesBogotáColombia
  3. 3.University of FreiburgFreiburg im BreisgauGermany
  4. 4.Universidad Técnica del NorteIbarraEcuador
  5. 5.Universidad de YachaySan Miguel de Urcuqui CantonEcuador

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