Hello Experts, 

I am running a paired t-test cortical thickness analysis based on the instruction on the wiki page (https://surfer.nmr.mgh.harvard.edu/fswiki/PairedAnalysis). However, the monte carlo files weren't not created when i corrected for multiple comparisons. Below are my script, fsgd files, mc-z log file, and a screenshot of contrast folder missing mc.z maps. Please can you help me figure out why the error is happening. Thank you.

Best, 
Paul

Script
pairs=pairs.fsgd paired=paired_diff.fsgd martrix1=mean.mtx martrix2=age.mtx

#resample each subjects's left and right hemisphere data to fsavarage. 
mris_preproc --target fsaverage --hemi lh --meas thickness --out lh.paired-diff.thickness.mgh --fsgd $pairs --paired-diff
mris_preproc --target fsaverage --hemi rh --meas thickness --out rh.paired-diff.thickness.mgh --fsgd $pairs --paired-diff


# #smoothen the concatenated file by 5mm FWHM. --cortex means only smooth areas in the cortex. N:B. FWHM changes based on study type.
mri_surf2surf --hemi lh --s fsaverage --sval lh.paired-diff.thickness.mgh --fwhm 5 --cortex --tval lh.paired-diff.thickness.sm05.mgh
mri_surf2surf --hemi rh --s fsaverage --sval rh.paired-diff.thickness.mgh --fwhm 5 --cortex --tval rh.paired-diff.thickness.sm05.mgh

# #Run GLM analysis
mri_glmfit --y lh.paired-diff.thickness.sm05.mgh --fsgd $paired --C $martrix1 --C $martrix2 --surf fsaverage lh --cortex --glmdir lh.paired-diff.glmdirir
mri_glmfit --y rh.paired-diff.thickness.sm05.mgh --fsgd $paired --C $martrix1 --C $martrix2 --surf fsaverage rh --cortex --glmdir rh.paired-diff.glmdir

# # #Run Clusterwise correction for multiple comparisons using MONTE CARLO. First create a table for of simulations 
mri_glmfit-sim --glmdir lh.paired-diff.glmdir --sim mc-z 10000 2 mc-z.abs.2 --sim-sign abs --cwpvalthresh 0.05 --2spaces --overwrite
mri_glmfit-sim --glmdir rh.paired-diff.glmdir --sim mc-z 10000 2 mc-z.abs.2 --sim-sign abs --cwpvalthresh 0.05 --2spaces --overwrite

Fsgd file 1:pairs.fsgd

GroupDescriptorFile 1

Class ADEX

Input 1000_1 ADEX

Input 1000_2 ADEX

Input 1001_1 ADEX

Input 1001_2 ADEX

Input 1003_1 ADEX

Input 1003_2 ADEX

Input 1005_1 ADEX

Input 1005_2 ADEX

Input 1008_1 ADEX

Input 1008_2 ADEX

Input 1013_1 ADEX

Input 1013_2 ADEX

Input 1014_1 ADEX

Input 1014_2 ADEX


Fsgd file 2: paired_diff.fsgd

GroupDescriptorFile 1

Class ADEX

Variables Age

Input 1000 ADEX 72

Input 1001 ADEX 76

Input 1003 ADEX 72

Input 1005 ADEX 80

Input 1008 ADEX 72

Input 1013 ADEX 80

Input 1014 ADEX 80