Dear Freesurfer Experts:

I repost a question I have when applying Monte Carlo simulation to control for multiple comparisons. Your help is much appreciated.

I did the correction via QDEC GUI. In the section of Monte Carlo Null-Z

simulation, I set Threshold: 2.0 (0.01) and Sign: neg. This generates a

"mc-z.neg.th20.sig.cluster.summary"

file in each contrast folder.

Later, I use the in-line: command mri_glmfit-sim instead. My input is:

ri_glmfit-sim --glmdir Untitled --cwpvalthresh .05 --cache 2 neg --2spaces. This generates a "cache.th20.neg.sig.cluster.summary" file for each contrast.

My question is : are these two summary files the same, one from QDEC

GUI with name " mc-z..." and the other from in-line command with name "cache..."?

My next question is: In QDEC GUI, when the simulation is finished,

the GUI automatically illustrates the clusters/brain, based on a file named

"mc-z.neg.th20.sig.cluster.mgh". But I doubted if this is

post-correction results. What is the right way to view results after

correction?

Thank you very much.

Karl