Automatic sleep stages classification using EEG entropy features and unsupervised pattern analysis techniques

Sleep is a growing area of research interest in medicine and neuroscience. Actually, one major concern is to find a correlation between several physiologic variables and sleep stages. There is a scientific agreement on the characteristics of the five stages of human sleep, based on EEG analysis. Nev...

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Autores:
Rodríguez-Sotelo J.L.
Osorio-Forero A.
Jiménez-Rodríguez A.
Cuesta-Frau D.
Cirugeda-Roldán E.
Peluffo Ordoñez, Diego H.
Tipo de recurso:
Article of journal
Fecha de publicación:
2014
Institución:
Universidad Cooperativa de Colombia
Repositorio:
Repositorio UCC
Idioma:
OAI Identifier:
oai:repository.ucc.edu.co:20.500.12494/42807
Acceso en línea:
https://doi.org/10.5935/1678-9741.20140101
https://www.sciencedirect.com/science/article/abs/pii/S0109564112004034
https://hdl.handle.net/20.500.12494/42807
Palabra clave:
Clustering
Feature extraction
Feature selection
Q-a
Relevance analysis
Signal entropy
Sleep stages
Rights
closedAccess
License
http://purl.org/coar/access_right/c_14cb
Description
Summary:Sleep is a growing area of research interest in medicine and neuroscience. Actually, one major concern is to find a correlation between several physiologic variables and sleep stages. There is a scientific agreement on the characteristics of the five stages of human sleep, based on EEG analysis. Nevertheless, manual stage classification is still the most widely used approach. This work proposes a new automatic sleep classification method based on unsupervised feature classification algorithms recently developed, and on EEG entropy measures. This scheme extracts entropy metrics from EEG records to obtain a feature vector. Then, these features are optimized in terms of relevance using the Q-a algorithm. Finally, the resulting set of features is entered into a clustering procedure to obtain a final segmentation of the sleep stages. The proposed method reached up to an average of 80% correctly classified stages for each patient separately while keeping the computational cost low. © 2014 by the authors.