Dear FSL experts,
I'm trying to analyze the differences between 2 groups (1 control group and
1 patient group) with tbss and I have some doubts regarding the outputs. I
am wondering if you could please help me with the interpretation of the results.
I'm comparing the results of randomise using cluster based thresholding (-c
1.7 option) and TFCE (--T2 option) with FSL 4.1.4 software according to the
following procedure:
- Cluster based corrected thresholding:
randomise -i all_FA_skeletonised.nii -m mean_FA_skeleton_mask.nii -o
resultados_TBSS -d matriz.mat -t matriz.con -n 5000 -c 1.7 -V
- TFCE:
randomise -i all_FA_skeletonised.nii -m mean_FA_skeleton_mask.nii -o
resultados_TBSS -d matriz.mat -t matriz.con -n 5000 --T2 -V
The outcomes that I select are:
Cluster based thresholding= _clustere_corrp_tstat1.nii.gz
TFCE= _tfce_corrp_tstat1.nii.gz
When I compare these images, they are very different! For the cluster based
thresholding method (-c 1.7), I observe only significance (using Min=0.95
and Max=1 in fslview) in some regions of the skeleton and in TFCE (--T2),
almost the entire skeleton is significant.
Can you please help me with the interpretation of these results?
Best regards,
Patricia
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