URI | http://purl.tuc.gr/dl/dias/31E2E3A0-8569-4EA9-AC2F-F877F28A03C4 | - |
Αναγνωριστικό | https://doi.org/10.1016/j.jneumeth.2011.02.001 | - |
Αναγνωριστικό | https://www.sciencedirect.com/science/article/pii/S0165027011000768 | - |
Γλώσσα | en | - |
Μέγεθος | 13 pages | en |
Τίτλος | Intertrial coherence and causal interaction among independent EEG components | en |
Δημιουργός | Zervakis Michail | en |
Δημιουργός | Ζερβακης Μιχαηλ | el |
Δημιουργός | Michalopoulos Konstantinos | en |
Δημιουργός | Μιχαλοπουλος Κωνσταντινος | el |
Δημιουργός | Iordanidou Vasiliki | en |
Δημιουργός | Ιορδανιδου Βασιλικη | el |
Δημιουργός | Sakkalis, Vangelis | en |
Εκδότης | Elsevier | en |
Περίληψη | Over the past few years there has been an increased interest in studying the underlying neural mechanism of attention and cognitive brain activity. This paper aims towards identifying and analyzing distinct responses in an auditory working memory paradigm, as independent components with variable latency, frequency and phase characteristics. The event-related nature of components (either phase or non-phase-locked) over multiple trials is thoroughly examined through intertrial coherence measures. Furthermore, the functional coupling of independent components is investigated through the concept of partial directed coherence depicted as a directed graph. Using these tools, the paper compares issues of activation, connectivity and directionality in the synchronization maps of two populations, of control and Alzheimer's subjects. The results on real data from an oddball experiment verify and further enhance the findings of previous studies and illustrate the potential of the proposed analysis framework.
| en |
Τύπος | Peer-Reviewed Journal Publication | en |
Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
Ημερομηνία | 2015-10-23 | - |
Ημερομηνία Δημοσίευσης | 2011 | - |
Θεματική Κατηγορία | ERP | en |
Θεματική Κατηγορία | Evoked activity | en |
Θεματική Κατηγορία | Induced oscillations | en |
Θεματική Κατηγορία | Intertrial coherence | en |
Θεματική Κατηγορία | ICA | en |
Θεματική Κατηγορία | Synchronization | en |
Θεματική Κατηγορία | Partial directed coherence | en |
Θεματική Κατηγορία | Alzheimer's disease | en |
Βιβλιογραφική Αναφορά | M. Zervakis, K. Michalopoulos, V. Iordanidou and V. Sakkalis,"Intertrial coherence and causal interaction among independent EEG components," J. Neuros. Methods, vol. 197, no.2, pp. 302-314, Apr. 2011. doi:10.1016/j.jneumeth.2011.02.001 | en |