Hello,
sorry for asking this again
I want to calculate the difference between the thickness of one subjects different hemispheres and show this on pial (left or right or even fsaverage_sys). so I have ran :
surfreg --s $subject --t fsaverage_sym --lh surfreg --s $subject --t fsaverage_sym --lh --xhemi
for my one subject. now I have two .reg files: shahi/xhemi/surf/lh.fsaverage_sym.sphere.reg shahi/surf/lh.fsaverage_sym.sphere.reg
If I am understanding this right, these two are the transform matrix for both hemisphere of my one subject to fsaverage_sym (*right?*)
if I run mris_preproc with xhemi option I will get a vector which have the length equal to number of vertexes. it's values are left-right (*or right-left?*). how can I convert this vector to pial or inflated surface? and how can I use lh.fsaverage_sym.sphere.reg to register my pial directly to fsaverage_sym?
Regards, Ashkan