Hi everyone,
I'm currently trying to analyse a dataset from several subjects with fsl (first time!).
I acquired the data in three runs, each has a block design (with three tasks), but each run had to be somewhat self-paced due to the nature of the task, so the onsets are not equal (durations are equal) over all three runs and additionally each run has a different number of volumes.
I previously analysed these subjects in SPM and made one firstlevel design for each subject. Since we would like to addtionally do an ICA analysis we would prefer to do all analyses in FSL (GLM and ICA).
I set up an FSL design, three first levels per subject, next step was entering the feat output from the runs into a second analysis. I used the same onsets and durations as well as design in FSL and SPM.
Here comes my problem: The results from the FSL and SPM analysis differ strongly, the analyses show completely different activated areas. Sadly SPM makes way more sense. Any ideas why this could be the case?
Is there a possibility to analyse all three runs in one design?
Thanks for any help!!
Best, Nils
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