Slow EEG pattern predicts reduced intrinsic functional connectivity in the default mode network: an inter-subject analysis.

The last two decades have witnessed great progress in mapping neural networks associated with task-induced brain activation. More recently, identification of resting state networks (RSN) paved the way to investigate spontaneous task-unrelated brain activity. The cardinal features characterising RSN are low-frequency fluctuations of blood oxygenation level dependent (BOLD) signals synchronised between spatially distinct, but functionally connected brain areas.

Is sedation-induced BOLD fMRI low-frequency fluctuation increase mediated by increased motion?

Object: Increases in low-frequency fluctuations (LFF, 0.01-0.1 Hz) of BOLD fMRI signal were observed during sedation and sleep.