After finishing preprocessing with fmriprep, I’m trying to use FSL FEAT for first level analysis, and get weird results in the stats folder under the .feat folder.
By “weird” I mean like this:
– fsleyes view of tsat3.nii.gz
I am using the 24 Head motion, the first 6 acomcor, and the cosine confounds as “additional confound EV’s”, under the “Stats” tab.
Tried smoothing FWHM with 4, and 5 mm, similar results.
I am using the space-MNI152NLin2009cAsym_desc-preproc_bold.nii.gz as 4D input
I tried registering it to MNI152-2mm following the Mumford solution of using FEAT on fmriprep output (How to use FEAT while skipping registration - YouTube)
Notice additional “weirdness” (roundness) of the design matrix:
– Design matrix, FWHM 5mm
In contrast with no smoothing at all:
Any clue what I’m missing?
I would appreciate your help with this, thank you.