Evaluation of Functional Network Connectivity in Event-related fMRI Data based in ICA and Time-frequency Granger Causality

• Authors: HAVLÍČEK Martin; JAN Jiří; CALHOUN Vince; BRÁZDIL Milan; MIKL Michal
• Year of publication: 2009
• Type: Article in Proceedings
• Conference: IFMBE Proceedings - World Congress on Medical Physics and Biomedical Engineering
• MU Faculty or unit: Faculty of Medicine
• Field: Neurology, neurosurgery, neurosciences
• Keywords: fMRI; ICA; spectral; Granger; adaprive
• Description: In this article we show that Adaptive Multivariate Autoregressive (AMVAR) modeling accompanied by proper preprocessing is an effective technique for evaluation of spectral Granger causality among functional brain networks identified by independent component analysis from event-related fMRI data.

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