20.500.12556/DKUM-20644 IZLOČANJE MOTENJ V VEČKANALNIH ELEKTROENCEFALOGRAMIH ARTEFACT REJECTION IN MULTICHANNEL ELECTROENCEPHALOGRAMS V diplomskem delu smo sistematično preučili in ovrednotili učinkovitost različnih algoritmov slepe ločitve signalov (SOBI, JADER, FASTICA, RUNICA) pri odstranjevanju artefaktov v večkanalnih elektroencefalogramih (EEG). Osredotočili smo se na časovno zahtevnost, na stopnjo dušenja artefaktov in na stabilnost konvergence omenjenih algoritmov. Podrobneje smo preučili učinkovitost odstranjevanja artefaktov zaradi utripanja z očmi, premikanja jezika, žvečenja, lateralnega premikanja oči ter premikanja glave. Ugotovili smo, da vsi testirani algoritmi, razen algoritma RUNICA, učinkovito odstranjujejo artefakte, in potrdili v uvodu zastavljeno tezo diplomskega dela, da je s postopki slepe ločitve signalov mogoče, tudi v primeru manjšega nabora kanalov EEG, učinkovito odstraniti šum in artefakte v signalih EEG. We have systematically studied and assessed the efficiency of various blind source separation algorithms (SOBI, JADER, FASTICA, RUNICA) in removing the artefacts in multichannel electroencephalograms (EEG). We have mainly focused on computational complexity of tested algorithms, level of their suppression of artefacts and on stability of their convergence. In particular, the efficiency in removing of the artefacts due to eye blinking, tongue movements, chewing, lateral eye movements and head movements has been assessed. All tested algorithms, except RUNICA, have demonstrated significant level of artefact suppression at relatively low computational costs. Out of the algorithms tested, SOBI offered the superior performance. We therefore conclude that blind signal separation is effective in removing of noise and artefacts in multichannel EEG, even in the case of small number of EEG channels. elektroencefalogram EEG slepa ločitev signalov EEGLAB sLORETA anotacija signalov artefakti razmerje artefakt-signal electroencephalogram EEG blind signal separation EEGLAB sLORETA signal annotation artefact artefact-signal ratio true true false [L. Bratoš] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2011-09-26 17:28:47 2011-09-28 11:02:33 2022-04-14 08:07:22 2022-04-18 03:20:06 2011 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.3:[591.185:616.8](043.2) 15658774 URN:SI:UM:DK:CYJZAQDU UNI_Bratos_Luka_2011.pdf UNI_Bratos_Luka_2011.pdf 1 441270F13B48E8CFCBF35240CB21F92C 6e64e9b8bb095712815b9ede409f2f0fd31c277e0273dfbd6a3cb92e0e5a40f2 aaf59145-7c05-11eb-bb7a-00155d0001ca 20.500.12556/dkum/cf69717f-f832-44cb-937d-b26cff98a254 https://dk.um.si/Dokument.php?lang=slv&id=25693 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0