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Decomposition and evaluation of activity in multiple event-related trials

Zervakis Michalis, Kostas Michalopoulos, Panteleimon Giannakopoulos, Nikolaos Bourbakis, M.P. Deiber

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URIhttp://purl.tuc.gr/dl/dias/FDB45FFB-2F3F-4F39-9832-B46A5450D8C1-
Αναγνωριστικόhttps://doi.org/10.1109/BIBE.2012.6399653-
Γλώσσαen-
Μέγεθος6 pagesen
ΤίτλοςDecomposition and evaluation of activity in multiple event-related trialsen
ΔημιουργόςZervakis Michalisen
ΔημιουργόςΖερβακης Μιχαληςel
ΔημιουργόςKostas Michalopoulosen
Δημιουργός Panteleimon Giannakopoulosen
ΔημιουργόςNikolaos Bourbakisen
ΔημιουργόςM.P. Deiberen
ΕκδότηςIEEEen
ΠερίληψηIt is generally accepted that evoked and induced activations represent different aspects of cerebral functions during an Event Related Potentials (ERP) experiment. Independent Component Analysis (ICA) has been successfully applied to event related electroencephalography (EEG) to decompose it into a sum of spatially fixed and temporally independent components that can be attributed to underlying cortical activity. A major problem in the application of ICA is the stability of estimated independent components. In this paper we exploited the split-half approach to assess component stability. We used different measures quantifying both phase and energy aspects of the ERP, in order to distinguish evoked from induced oscillations. We applied these measures to the stable independent components derived from a dataset of progressive Mild Cognitive Impairment (PMCI) and elderly controls. We found reduced energy in the induced theta activity in PMCI subjects, in accordance with previous studies. In addition, PMCI subjects presented lower phase-locking values and diminished late alpha band energy in contrast to controls.en
ΤύποςΠλήρης Δημοσίευση σε Συνέδριοel
ΤύποςConference Full Paperen
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2015-10-24-
Ημερομηνία Δημοσίευσης2012-
Θεματική ΚατηγορίαClinical laboratory techniciansen
Θεματική ΚατηγορίαMedical laboratory techniciansen
Θεματική Κατηγορίαmedical technologistsen
Θεματική Κατηγορίαclinical laboratory techniciansen
Θεματική Κατηγορίαmedical laboratory techniciansen
Βιβλιογραφική ΑναφοράK. Michalopoulos, M. Zervakis, N. Bourbakis, P. Giannakopoulos, M.P.Deiber ,"Decomposition and evaluation of activity in multiple event-related trials," in 2012 2th Intern. Conf. on Bioinf. and Bioengineering (BIBE) ,pp.374 - 379.doi:10.1109/BIBE.2012.6399653en

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