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Hello all, I've encountered a problem that need help with. I have done an event-related analysis on a subject in fsl which has given us good results. now i am interested to do this in spm. i want to use the preprocessed 4D nifty file (filtered_func_data.nii.gz) and do the first level analysis in spm. the results are totally different, do you have any idea why? i have attached the design.fsf file of fsl and the m file that was used in spm. i have used exactly the same contrasts. the design matrix (design.mat in fsl and SPM.Xx.x in spm) are way different. Thanks