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- W2022134429 abstract "We used simultaneous electroencephalogram-functional magnetic resonance imaging (EEG-fMRI) and EEG-near infrared spectroscopy (NIRS) to investigate whether changes of the posterior EEG alpha rhythm are correlated with changes in local cerebral blood oxygenation. Cross-correlation analysis of slowly fluctuating, spontaneous rhythms in the EEG and the fMRI signal revealed an inverse relationship between alpha activity and the fMRI-blood oxygen level dependent signal in the occipital cortex. The NIRS-EEG measurements demonstrated a positive cross-correlation in occipital cortex between alpha activity and concentration changes of deoxygenated hemoglobin, which peaked at a relative shift of about 8 s. Our data suggest that alpha activity in the occipital cortex is associated with metabolic deactivation. Mapping of spontaneously synchronizing distributed neuronal networks is thus shown to be feasible." @default.
- W2022134429 created "2016-06-24" @default.
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- W2022134429 date "2003-09-01" @default.
- W2022134429 modified "2023-10-14" @default.
- W2022134429 title "Correlates of alpha rhythm in functional magnetic resonance imaging and near infrared spectroscopy" @default.
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- W2022134429 doi "https://doi.org/10.1016/s1053-8119(03)00344-6" @default.
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