Thank you doug for you answer.
So now I have two other question. 1- how can I check the inter hemisphere registration quality? e.g. can I check if the parcellation for the two hemisphere are matched well? or there is other ways?
2- how can I correct for multiple correction for single subject? calculate the p vale for each vertex (to find significant difference between the two hemisphere) and correct these for multiple correction.
Regards, Ashkan
What is your mris_preproc command line? If you run mris_preproc with --xhemi, it should give you two frames (left hemi and right hemi). If you want to compute left-right, then add --paired-diff to the command line. The output will be on the lh of fsaverage_sym. This can be displayed on the white, pial, or inflated of fsaverage_sym. You can use mris_apply_reg to map this back to the subject's native surface if you want to display it there. doug
On 2/19/16 9:18 AM, Ashkan Faghiri wrote:
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
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Ashkan Faghiri MSc student of Bioelectrical Engineering Department of Electrical Engineering Sharif University of Technology
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