You could do a couple of things. You could concat (mri_concat) the talairach maps together and do a group analysis on the FA. This is not a super-great way to go because the talairach registration will mix white matter with the gray matter. Alternatively, you can do a region-of-interest analysis using the wmparc. That's probably better.
doug
Samantha Clark wrote:
Hi Doug,
I did the first level analysis for my DTI data per the tutorial
mri_glmfit --y group-fa-tal.nii --mask group-mask-tal.nii\ --fsgd your.fsgd --C contrast --glmdir groupanadir
Not sure how to proceed from here to view the regions that are statistically signifiant. Can you help?
Thanks Samantha
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