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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