Thank you very much for your advice. I need to confirm now whether it is appropriate for me to do this.
smoothAROMAnonaggrs just do spatial smoothing and motion correction, right?
If I use a smoothAROMAnonaggrs file for functional connection analysis, it means that I need to regress the CSF/WM components and aroma_motion components(from confounds_regressors.tsv). Then perform the bass-pass filter. Finally, when doing a group-level comparison, use the mean FD as a co variable.
Thanks again for your kind help.