Observing Resting-State Brain Modules at Different Frequencies Using MREG

Hsu-Lei Lee¹, Jakob Asslnder¹, Pierre Levan¹, Jrgen Hennig¹

In this study we used MREG sequence with stack-of-spirals trajectory to obtain resting-state fMRI signal at 10 Hz sampling rate. Data were filtered into three different frequency bands and put through the same post-processing steps. Results of spatial ICA were checked with ICASSO and the reliable components were used in the following connectivity analysis to generate functional modules in the brain and calculate the modularity coefficients. We found that as some modules can be seen at all frequencies, and some only appears in one or two of the bands.