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Hi Freesurfer experts,
I'm very sorry to bother you, but I am very confused with the following questions:
My experimental design includes two discrete factors: with three levels (d,m,h); gender (f, m), and two Nvariables
So I can get 6 classes: df, dm,mf, mm,hf,hm.
I want to perform the difference between any of the classes leves analysis with regressing out the effect of gender and two Nvariables, but I don't know the rules for setting the contrasts for the F-test. The contrast matrix I used is:
1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 -1 0 0 0 0 0 0 0 0 0 0 0 0 My orders are as follows： mris_preproc --fsgd glmteach.fsgd --target fsaverage --hemi lh --meas area --out lh_teach.mgh mris_preproc --fsgd glmteach.fsgd --target fsaverage --hemi rh --meas area --out rh_teach.mgh
mri_glmdir --y lh_teach.mgh --fsgd glmteach.fsgd --C glmteach.mtx --glmdir group.area_sm.lh --fwhm 10 --surface fsaverage lh --eres-save
mri_glmdir --y rh_teach.mgh --fsgd glmteach.fsgd --C glmteach.mtx --glmdir group.area_sm.rh --fwhm 10 --surface fsaverage rh --eres-save
mri_glmdir-sim --glmdir group.area_sm.lh --2spaces --cwp 0.05 --perm 100 1.3 abs mri_glmdir-sim --glmdir group.area_sm.rh --2spaces --cwp 0.05 --perm 100 1.3 abs
But there is no region of interest after running， Can I change the correction method or did I use it wrong
Any help will be very appreciated.
Best wishes,