Analysis of the time-varying energy of brain responses to an oddball paradigm using short-term smoothed Wigner-Ville distribution

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dc.authoridTağluk, M. Emin/0000-0001-7789-6376
dc.authorwosidTağluk, M. Emin/ABH-1005-2020
dc.contributor.authorTagluk, ME
dc.contributor.authorÇakmak, ED
dc.contributor.authorKarakas, S
dc.date.accessioned2024-08-04T20:13:48Z
dc.date.available2024-08-04T20:13:48Z
dc.date.issued2005
dc.departmentİnönü Üniversitesien_US
dc.description.abstractCognitive brain responses to external stimuli, as measured by event related potentials (ERPs), have been analyzed from a variety of perspectives to investigate brain dynamics. Here, the brain responses of healthy subjects to auditory oddball paradigms, standard and deviant stimuli, recorded on an Fz electrode site were studied using a short-term version of the smoothed Wigner-Ville distribution (STSW) method. A smoothing kernel was designed to preserve the auto energy of the signal with maximum time and frequency resolutions. Analysis was conducted mainly on the time-frequency distributions (TFDs) of sweeps recorded during successive trials including the TFD of averaged single sweeps as the evoked time-frequency (ETF) brain response and the average of TFDs of single sweeps as the time-frequency (TF) brain response. Also the power entropy and the phase angles of the signal at frequency f and time t locked to the stimulus onset were studied across single trials as the TF power-locked and the TF phase-locked brain responses, respectively. TFDs represented in this way demonstrated the ERP spectro-temporal characteristics from multiple perspectives. The time-varying energy of the individual components manifested interesting TF structures in the form of amplitude modulated (AM) and frequency modulated (FM) energy bursts. The TF power-locked and phase-locked brain responses provoked ERP energies in a manner modulated by cognitive functions, an observation requiring further investigation. These results may lead to a better understanding of integrative brain dynamics. (c) 2004 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.jneumeth.2004.10.007
dc.identifier.endpage208en_US
dc.identifier.issn0165-0270
dc.identifier.issn1872-678X
dc.identifier.issue2en_US
dc.identifier.pmid15814152en_US
dc.identifier.scopus2-s2.0-16244419367en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage197en_US
dc.identifier.urihttps://doi.org/10.1016/j.jneumeth.2004.10.007
dc.identifier.urihttps://hdl.handle.net/11616/93860
dc.identifier.volume143en_US
dc.identifier.wosWOS:000228708900012en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofJournal of Neuroscience Methodsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjecttime-frequency analysisen_US
dc.subjectbrain dynamicsen_US
dc.subjectevent-related potentialsen_US
dc.subjectoscillatory responsesen_US
dc.subjectWigner-Ville distributionen_US
dc.subjectphase-locked energyen_US
dc.titleAnalysis of the time-varying energy of brain responses to an oddball paradigm using short-term smoothed Wigner-Ville distributionen_US
dc.typeArticleen_US

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