Dear Doug,
I wonder if you could get the chance to finish the work regarding the Nearest
Cortical Label (Annotation) for the CVS space.
Also, I have few questions and I will appreciate if anyone can help:
1) Can I get more clusters after I correct for multiple comparison than
the number of clusters I have in the uncorrected results? Is this
possible?
2)When I change the smoothing from fwhm 10 to fwhm 20 for example why I am
loosing from my clusters (uncorrected results)? Also in this case my clusters
show became larger no?
3) I found my significant clusters after multiple comparisons for the FA group
analysis study and I would like to dilate all regions
for a better visualization, using the dilM function of the FSL tool
fslmaths.Can you please advise me how to do it if I have the significant
clusters file permcsd.sig.cluster.mgh?
4) As I mentioned before,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 subjects 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?
How can I run a structural analysis on my DTI data?
Many thanks!Antonella
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