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Hello Freesurfer Team,

I am interested in using premotor, precentral gyrus and postcentral gyrus in my analysis.

For the definition of the precentral gyrus and postcentral gyrus I use the following lines:

fslmaths aparc+aseg.nii.gz -thr 1024 -uthr 1024 PreCG_L.nii.gz

fslmaths aparc+aseg.nii.gz -thr 2024 -uthr 2024 PreCG_R.nii.gz

fslmaths aparc+aseg.nii.gz -thr 1022 -uthr 1022 PostCG_L.nii.gz

fslmaths aparc+aseg.nii.gz -thr 2022 -uthr 2022 PostCG_R.nii.gz

 

To define the premotor area I use the labels rh.BA6_exvivo.label  and lh.BA6_exvivo.label according to the script below:

bbregister --s SubID_FreeSurfer --mov nodif.nii.gz --reg lowb2orig.dat --dti --init-fsl

mri_label2vol --label SubID_FreeSurfer /label/rh.BA6_exvivo.label  --reg lowb2orig.dat  --fillthresh .3 --hemi rh --subject SubID_FreeSurfer --o BA6_R.nii.gz --temp nodif.nii.gz  --proj frac 0 1 .1

 

When I check the location of the resulted BA6 and precentral gyrus masks, there is an overlap. Could you please advise if there is any other way to define premotor area?

 

Thank you in advance,

Evie



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