Texeira, A. R. and Tomé, A. M. and Lang, Elmar and Gruber, Peter and Martins da Silva, A. (2006) Extraction and separation of high-amplitude artifacts in electroencephalograms from epileptic patients. In: Ruggiero, C., (ed.) Proceedings of the Fourth IASTED International Conference on Biomedical Engineering: February 15 - 17, 2006, Innsbruck, Austria. Acta Press, Anaheim, pp. 270-275. ISBN 0-88986-576-0.
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Electroencephalogram (EEG) recordings are often dis torted by high-amplitude artifacts which hamper its correct visual inspection. In this work we present a method which can be applied separately to each channel to extract high amplitude components. The method is called local singu lar spectrum analysis (SSA) and is a principal component analysis in clusters formed after embedding the signals in their time-delayed coordinates. The extracted signal can be subtracted from the original channel resulting in a cor rected EEG version. The algorithm is applied to real EEG segments containing paroxysmal epileptiform activity con taminated by artifactual activity. The extracted artifact as well as the corrected EEG will be presented.
|Item Type:||Book Section|
|Institutions:||Biology, Preclinical Medicine > Institut für Biophysik und physikalische Biochemie > Prof. Dr. Elmar Lang|
|Keywords:||Singular spectrum analysis, artifacts removal, Electroen cephalogram, Electrooculogram|
|Subjects:||500 Science > 570 Life sciences|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||12 Oct 2010 11:31|
|Last Modified:||12 Oct 2010 11:31|
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