A Contribution for the Automatic Sleep Classification Based on the Itakura-Saito Spectral Distance

Abstract : Sleep staging is a crucial step before the scoring the sleep apnoea, in subjects that are tested for this condition. These patients undergo a whole night polysomnography recording that includes EEG, EOG, ECG, EMG and respiratory signals. Sleep staging refers to the quantification of its depth. Despite the commercial sleep software being able to stage the sleep, there is a general lack of confidence amongst health practitioners of these machine results. Generally the sleep scoring is done over the visual inspection of the overnight patient EEG recording, which takes the attention of an expert medical practitioner over a couple of hours. This contributes to a waiting list of two years for patients of the Portuguese Health Service. In this work we have used a spectral comparison method called Itakura distance to be able to make a distinction between sleepy and awake epochs in a night EEG recording, therefore automatically doing the staging. We have used the data from 20 patients of Hospital Pulido Valente, which had been previously visually expert scored. Our technique results were promising, in a way that Itakura distance can, by itself, distinguish with a good degree of certainty the N2, N3 and awake states. Pre-processing stages for artefact reduction and baseline removal using Wavelets were applied.
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Communication dans un congrès
Luis M. Camarinha-Matos; Pedro Pereira; Luis Ribeiro. First IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS), Feb 2010, Costa de Caparica, Portugal. Springer, IFIP Advances in Information and Communication Technology, AICT-314, pp.373-380, 2010, Emerging Trends in Technological Innovation. 〈10.1007/978-3-642-11628-5_41〉
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Eduardo Cardoso, Arnaldo Batista, Rui Rodrigues, Manuel Ortigueira, Cristina Bárbara, et al.. A Contribution for the Automatic Sleep Classification Based on the Itakura-Saito Spectral Distance. Luis M. Camarinha-Matos; Pedro Pereira; Luis Ribeiro. First IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS), Feb 2010, Costa de Caparica, Portugal. Springer, IFIP Advances in Information and Communication Technology, AICT-314, pp.373-380, 2010, Emerging Trends in Technological Innovation. 〈10.1007/978-3-642-11628-5_41〉. 〈hal-01060761〉

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