On 11/21/2012 05:48 AM, Gabriel Gonzalez Escamilla wrote:

Dear Doug

I'm looking for making the interhemispheric registration procedure of FS, I was just gertting familiar with it by reading the: http://surfer.nmr.mgh.harvard.edu/fswiki/Xhemi I found that in the step "# Correct for MC" say that this need a new version of mri_glmfit-sim, is this version somehow available now? or it does refeer to the FS v5.1 version?

Actually, you don't need the new version anymore. Just run it without the "--subject-override fsaverage" argument. I'll change it on the wiki.

I have two doubs about the whole procedure: which are the main differences between using the FS average and creating my own average?

Your own atlas might allow for a better fit to the data.

and second: if I decide to create my own atlas, after all the 1.3 procedure, should I then run the 1.2 steps subtituing the FSaverage_sym for mine?

Yes. I would try it with the default fsaverage_sym. I had to go through 35 iterations to make sure fsaverage_sym was really symmetrical. This takes a very long time, so if your results are satisfactory with fsaverage_sym, I would use that. doug

Many thanks in advanced, Gabriel