Which BSS method separates better the EEG Signals? A comparison of five different algorithms

dc.contributor.author Christos Stergiadis
dc.contributor.author Manousos A. Klados
dc.contributor.author Vasiliki-Despoina Kostaridou
dc.date.accessioned 2022-04-07T09:17:56Z
dc.date.available 2022-04-07T09:17:56Z
dc.date.issued 2022-02
dc.description.abstract A very common strategy for rejecting electroencephalographic (EEG) artifacts, includes the decomposition of filtered EEG signals using a Blind Source Separation (BSS) algorithm, the identification and removal of artifactual components and the reconstruction of the cleaned EEG signals. In this pipeline, the performance of the BSS algorithm, which is defined as its ability to separate properly the independent sources (like the EEG from artifactual sources), is very crucial for rejecting most of the artifacts, while maintaining the most part of EEG intact. The overwhelming majority of the published papers uses the extended INFOMAX version of Independent Component Analysis (ICA) for artifact rejection purposes. But is this the most efficient algorithm to separate EEG signals into independent components? This study comes to shed light to the aforementioned question by assessing the performance of the five most common BSS algorithms. The normalized entropy of the brain-related components, their correlation between independent components with the original sources and the amount of the overall mutual information reduction (MIR) achieved by each decomposition were computed in datasets with systematically varying numbers of electrodes (ranging from 19 tο 99), from 26 real human scalp EEG recordings. Additionally, 54 different datasets containing artificially contaminated EEG signals were also examined for the same purpose, on the basis of the Euclidean distance and the correlation, between the generated Independent Components (ICs) and the original vertical and horizontal eye signals, which were used for the contamination. The results support that the Adaptive Mixture ICA was the best performing BSS method.
dc.identifier.citation Stergiadis, Christos & Kostaridou, Vasiliki-Despoina & Klados, Manousos. (2022). Which BSS method separates better the EEG Signals? A comparison of five different algorithms. Biomedical Signal Processing and Control. 72. 103292. 10.1016/j.bspc.2021.103292.
dc.identifier.other 10.1016/j.bspc.2021.103292
dc.identifier.uri https://s455778.name-servers.gr/handle/123456789/41
dc.language.iso en
dc.publisher Elsevier
dc.title Which BSS method separates better the EEG Signals? A comparison of five different algorithms
dc.type Article
dspace.entity.type
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