Summary of what happened:
I preprocessed task fMRI data with fmriprep 22.1.1 with no errors. However, there were no cosine regressors output with confounds, perhaps because it was a relatively short run (154 volumes at TR=800ms, whereas longer runs did have cosine regressors).
I would like to run GLMs through fitlins (0.11.0) using an acompcor-based model, but I do not have the appropriate cosine regressors to high-pass filter correctly. I noticed that fitlins has a
--drift-model cosine option. Would this produce the same cosine regressors and be an appropriate substitute?