Dear All,

 

I need to export a T1.mgz and  N points (Nx3 coordinates .mat file) of the same volume in SPM12b. N are actually intracranial electrodes.

For this, I save T1.mgz as .nii prior to import into SPM.

Should I use volume index, volume RAS or surface RAS coordinates for N?

What other transforms I should apply to the .mat coordinate file so that when read in SPM is in the same space as T1.nii?

Please advise,

Thank you,

 

Octavian.