On 12/3/13 11:08 PM, krista kelly wrote:

Great thanks Douglas! I'm glad that this is available, I wasn't too keen on using the 'flip the brain' method of looking for hemisphere asymmetries.

Just a few questions regarding the first step - Apply an existing atlas (fsaverage_sym); this looks like a "for" loop, which I'm not great at figuring out. I would like to know how to actually do this.

It seems like I would need to give it a list of all my subjects so that it can go through each subject separately without me having to run each participant separately. Is that correct? If so, and I have 40 participants, I'll need to leave the computer for a few days to do this. Is that correct?

Yes.

Lastly, how do I create the subject list? I tried just creating a list of my subjects using text mate and keeping it in the subjects folder, then using that in place of (subject list). This didn't work.

You're half way there, just
set subjectlist = `cat subjectlistfile`
where subjectlistfile is the file that you created (which can be called anything)
doug

Thanks again!
On Sat, Nov 30, 2013 at 2:34 PM, Douglas Greve <greve@nmr.mgh.harvard.edu> wrote:
yep, we have an existing stream complete with documentation and a publication you can cite!
http://surfer.nmr.mgh.harvard.edu/fswiki/Xhemi

On 11/30/13 12:59 PM, krista kelly wrote:
Hello,

I need to do a within group hemisphere comparison to see if there are any hemisphere asymmetries in a patient group. I would like to do this in QDec or if possible, somehow do it in freesurfer without using Qdec. I asked this question two years ago and you mentioned that you were working on this and it should be available soon. Has there been any progress?

Thanks!

Krista
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