Dear all,
I completed my DTI group analysis at subcortical level on the CVS space and found clusters that survived by multiple comparisons. The results shows that FA is decreasing in patients vs. controls.
I used then the same subject to do a structural group analysis to compare the cortical thickness between the two classes. I found some clusters on the fsaverage but this time they different located then the clusters found in my DTI data. Is this right? I suppose it should be since I compare two different data sets for the same subjects: FA clusters on subcortical CVS space vs. structural data on the fsaverage. I still found that my cortical thickness is decreasing in patients vs. controls but is there any relation that I can established between the two studies?
Can I merge my structural results with my subcortical results? I was reading about this on your webpage:http://surfer.nmr.mgh.harvard.edu/fswiki/FsFastTutorialV5.1/FsFastGroupLevel
but I am not sure if in this case the structural analysis is using the same functional data set while in my case I have same subjects but structural data for the structural group analysis and DTI data for the subcortical analysis.
Can you please make this a little clear for me?
Thank you very much! Antonella