Task-related dynamic functional connectivity in fast fMRI

Sahib, AK; Erb, M; Scheffler, K; Ethofer, T; Focke, N

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Task-related dynamic functional connectivity in fast fMRI

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Scheffler, K
Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Sahib, A., Erb, M., Scheffler, K., Ethofer, T., & Focke, N. (2016). Task-related dynamic functional connectivity in fast fMRI. Poster presented at 24th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2016), Singapore.

Zitierlink: https://hdl.handle.net/21.11116/0000-0000-7BAD-4

Zusammenfassung

Recent advances in simultaneous multi-slice imaging have improved the temporal resolution of fMRI. Using a sliding window approach we aimed to capture the dynamic network changes that occur during visual stimulation. We estimated the functional connectivity degree (FCD) at various stimulation lengths and window sizes. We demonstrate that the analysis of dynamic functional connectivity using a sliding window approach is an effective technique to capture whole brain temporal dynamics during a simple block-designed visual experiment (checkerboards). In summary, for the current setup, a window size of 13.s provided an optimum trade-off between temporal smoothness and FCD estimation.