Dear MNE-experts,
I’m trying to create an stc label for fsaverage (morphed brain) in MNE-python based on (x,y,z) Talairach coordinates taken from the literature, to perform source-level analysis in a label.
From what I see, I thought to get “MNI Talairach" coordinates (MNI305) for each vertex using mne.vertex_to_mni, and then transform these coordinates to Talairach coordinates to compare (or the other way around, transform Talairach to “MNI Talairach" if it’s easier), and then compare.
However I have found many discussions on this transformation: that it’s rather non-linear, and despite some functions or matrices of transformation are proposed, they are all given with the comments that they are tested only for a specific MNI-space, for example, which is used in SPM in a particular version (from what I understood, these transforms are just not for MNI305). See for example:
https://imaging.mrc-cbu.cam.ac.uk/imaging/MniTalairach
I’m sorry if I misunderstood something. I tried some transformations, but I’m afraid they are not applicable for my stc data from MNE.
Maybe there’s someone who knows some straightforward way to make such a transform of coordinates (“MNI Talairach" to “Talairach” or back) that will be for sure fine with MNE templates?
Thanks in advance !
Victoria