Distinctive time-lagged resting-state networks revealed by simultaneous EEG-fMRI

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• 作者：Bernd Feige^a ; ; Kai Spiegelhalder^a ; Andrea Kiemen^a ; Oliver G. Bosch^b ; Ludger Tebartz van Elst^c ; Jü ; rgen Hennig^d ; Erich Seifritz^b ; Dieter Riemann^a
• 关键词：EEG-fMRI ; Insomnia ; Resting state ; EEG frequency bands ; Spontaneous activity
• 刊名：NeuroImage
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：145
• 期：part_PA
• 页码：1-10
• 全文大小：713 K
• 卷排序：145

文摘

Both EEG and fMRI show characteristic fluctuations over time in the resting state. The functional significance of these fluctuations still unclear. By combining both methods and allowing time lags of up to 10.5 s between the two modalities, we show that functional MRI increases commonly precede EEG power increases by seconds. This indicates that at least one common mechanism connecting fMRI and EEG changes is much slower than expected with direct neural transmission.