Hi Antonella

talairach.lta and .xfm are linear transforms to a Talairach coordinate system. The .m3z is a nonlinear morph and will give you much higher anatomical resolution.

cheers
Bruce

On Thu, 11 Aug 2011, Antonella Kis wrote:

Dear Freesurfers,


I am ready to run the make_average_subject and I need to specify   -xform  for 
the talairach transform: talairach.lta , talairach.m3z or talairach.xfm. What 
is the
difference between this and what should I use for the make_average_subject in 
order to prepare my data for the GLM analysis?

Thank you very much for your help.
Antonella


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