Application of Partial Directed Coherence to the Analysis of Resting-State EEG-fMRI Data

Biazoli Jr., Claudinei E.; Sturzbecher, Marcio; White, Thomas P.; Onias, Heloisa Helena dos Santos; Andrade, Katia Cristine; Araújo, Dráulio Barros de; Sato, João R.

Application of Partial Directed Coherence to the Analysis of Resting-State EEG-fMRI Data

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dc.contributor.author	Biazoli Jr., Claudinei E.
dc.contributor.author	Sturzbecher, Marcio
dc.contributor.author	White, Thomas P.
dc.contributor.author	Onias, Heloisa Helena dos Santos
dc.contributor.author	Andrade, Katia Cristine
dc.contributor.author	Araújo, Dráulio Barros de
dc.contributor.author	Sato, João R.
dc.date.accessioned	2017-05-31T17:10:48Z
dc.date.available	2017-05-31T17:10:48Z
dc.date.issued	2013
dc.description.resumo	The simultaneous acquisition of electroencephalography (EEG) and functional magnetic resonance imaging (fMRI) data potentially allows measurement of brain signals with both high spatial and temporal resolution. Partial directed coherence (PDC) is a Granger causality measure in the frequency domain, which is often used to infer the intensity of information flow over the brain from EEG data. In the current study, we propose a new approach to investigate functional connectivity in resting-state (RS) EEG-fMRI data by combining time-varying PDC with the analysis of blood oxygenation level-dependent (BOLD) signal fluctuations. Basically, we aim to identify brain circuits that are more active when the information flow is increased between distinct remote neuronal modules. The usefulness of the proposed method is illustrated by application to simultaneously recorded EEG-fMRI data from healthy subjects at rest. Using this approach, we decomposed the nodes of RS networks in fMRI data according to the frequency band and directed flow of information provided from EEG. This approach therefore has the potential to inform our understanding of the regional characteristics of oscillatory processes in the human brain.	pt_BR
dc.identifier.doi	10.1089/brain.2012.0135
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/23293
dc.language	eng	pt_BR
dc.rights	Acesso Aberto	pt_BR
dc.subject	default mode network	pt_BR
dc.subject	directed coherence	pt_BR
dc.subject	Granger causality	pt_BR
dc.subject	resting-state networks	pt_BR
dc.subject	simultaneous data acquisition	pt_BR
dc.title	Application of Partial Directed Coherence to the Analysis of Resting-State EEG-fMRI Data	pt_BR
dc.type	article	pt_BR