Dear Freesurfer Experts,
 
I did a correlational analysis in qdec and found several significant clusters after Monte-Carlo simulation (0.05).
Now, I would like to extract the mean cortical thickness, area and folding values (peak maximum) of each study subject above the significant cluster.
 
I tried to run "mri_glmfit-sim --glmdir mc-z.neg.th13.pdf.dat --cache "1,3" --sim-sign neg"
 
However, I got the ERROR: thresh = 1.3 not completely converted
 
What am I doing wrong? Any other ideas? 
 
Is the pdf.dat file the right one to use???
 
Thanks! 
 
DH