Hi Bruce,

Thanks again for your  help.

I have two more question please:

1). When I need to average my  subjects and controls all together while using         make_average_subject  --subjects 1 2... ?

2) When I run the make_average_subject  I need to specify   -xform talairach.lta or talairach.m3z. What is the difference between this two and what should I choose or how I know which one I have to choose?

Thank you very much for your help. Antonella

________________________________ From: Bruce Fischl fischl@nmr.mgh.harvard.edu To: Antonella Kis atorok9@yahoo.com Cc: "freesurfer@nmr.mgh.harvard.edu" freesurfer@nmr.mgh.harvard.edu Sent: Wednesday, August 10, 2011 2:31 PM Subject: Re: [Freesurfer] FSGDF matrix

yes, they both need to be in there On Wed, 10 Aug 2011, Antonella Kis wrote:

Dear Bruce,

I am ready to start my GLM group analysis. I am trying to construct the FSGDF by constructing an my_age_fsgd.txt file.  I was reading the tutorial and I am not sure if I need to put together my patients and controls in my FSGDF since my group study will be for patients versus controls.

Please advise me. Thank you. Antonella

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