Dear all,
I am looking for some help to build the contrast map of a longitudinal VBM analysis. I have 2 groups of individuals (patients and controls) with 2 time points MRIs. My question is if patients have more atrophy than controls comparing the first and the second MRI. I am using VBM8 and I followed the steps of VBM8 toolbox manual for longitudinal analysis. This resulted in the matrix attached.
Now I am not sure how to use the contrasts.
Thanks, Ana Carolina
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