Dear FS team,
I am doing a cortical thickness study using QDEC. I used FDR and got the following clusters: Generating cluster stats using min threshold of 3.8... Found 2 clusters Contrast: 'lh-Diff-Class1-Class2-Intercept-thickness', 15fwhm, DOF: 69 ClusterNo Max VtxMax Size(mm2) TalX TalY TalZ NVtxs Annotation --------- --- ------ --------- ---- ---- ---- ----- ---------- 1 -3.8743 18231 4.55 -39.8 1.5 14.1 14 precentral 2 -3.8065 47386 2.66 -8.2 33.1 33.9 4 superiorfrontal ============================================================ I need to get the cortical thickness values from each subject within this clusters so I am trying to use mri_glmfit-sim with --cache option and I wonder what value should I choose in this case for cache (2, 3.3 or 4) and what --cwpvalthresh 0.05 or .025 to get the same results as FDR's results. I tried: mri_glmfit-sim \ --glmdir lh.L_frontal.glmdir \ --cache 3 neg \ --cwpvalthresh .05 \ --overwrite # ClusterNo Max VtxMax Size(mm^2) MNIX MNIY MNIZ CWP CWPLow CWPHi NVtxs Annot 1 -3.874 18231 320.36 -39.8 1.5 14.1 0.02610 0.02410 0.02820 949 precentral 2 -3.807 47386 700.61 -8.2 33.1 33.9 0.00020 0.00000 0.00040 1053 superiorfrontal so as you can see the clusters are the same but their Size and NVtxs is so different. What is wrong? Thank you for your time and help. Antonella
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