Dear SPMers,
I have a small question concerning the preprocessing of fMRI data.
I want to use the more advanced Realign & Unwarp function in my preprocessing pipeline, but I discovered that two of the 37 subject do not have fieldmaps, a necessity for the unwarping. Would it be wise to preprocess 35 subject with the Realign & Unwarp function and use them alongside the other two subjects, preprocesed with the common method?
It does not influence first level analysis, but is it nefast for second level analysis?
Thank you in advance,
Yours sincerely,
Bruno
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