I have a very simple ASL Pre and Post Intervention MRI scan. We just want to have a look at the data in more detail.
I simply want to pull out the P values for the pre and post comparisons of the fully processed ASL scan.
I am trying to go through the gui and specify a second-level model.
I have tried doing a paired t-test and a one-sample t-test and then entering the scans, but every time that I try to "estimate" the model - it fails. Is this because I am only inserting 2 scans? These scans were processed in FSL, but that shouldn't make a difference, right?
Does anyone know how to do a simple t-test on two fully processed ASL scans? I can't understand why what I was doing didn't work? Was it too few scans?
J
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