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Title: Event-related potentials processing using independent component analysis technique
Alternative title / Subtitle: application to 6 month abstinent addicts
Authors: Μοάτσος, Μ.
Βεντούρας, Ερρίκος Μ.
Παπαγεωργίου, Χαράλαμπος
Λιάππας, Ιωάννης Α.
Νικολάου, Χρυσούλα
Contributors: Ραμπαβίλας, Ανδρέας Ν.
Ουζούνογλου, Νικόλαος Κ.
Item type: Conference publication
Conference Item Type: Full Paper
Keywords: Electroencephalography;Independent component analysis;Ηλεκτροεγκεφαλογράφημα;Ανάλυση ανεξάρτητων συνιστωσών
Subjects: Medicine
Computer engineering
Μηχανική υπολογιστών
Issue Date: 26-Jan-2015
Abstract: Electroencephalographic Event-Related Potentials (ERPs) present special interest for investigating cognitive processes. ERP curves contain peaks called components, such as the P600 component. P600 may be present in the averaged ERP waveform as a not-easily discernible secondary peak. In order to extract the P600 component, Independent Component Analysis (ICA) is used. ICA is a method used for solving the Blind Source Separation (BSS) problem, based on the assumption that the sources are statisti cally independent. The focus of the present study was to select a subset of independent components (ICs) for the reconstruction of the averaged ERPs in the original electrode recording positions and in the time frame of the P600 component. Two empirical criteria are used for the selection of the IC’s; the first criterion is based on the temporal proximity of the original P600 and the IC projection that reconstructs the P600 component and the second criterion is maximizing the reconstructed P600 amplitude based on the selection of a combination of IC projections using up to a preselected maximum number of them. The techniques are tested on ERPs recorded from healthy subjects and heroin addicts.
Description: Proceedings of the 4th European Symposium on Biomedical Engineering
Language: English
Citation: Moatsos, M., Ventouras, E., Papageorgiou, C., Liappas, I.A., Nikolaou, C., et al. (2004). Event-related potentials processing using independent component analysis technique: application to 6 month abstinent addicts. In the 4th European Symposium on Biomedical Engineering. University of Patras: Patras, 2004.
Conference: European Symposium on Biomedical Engineering
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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