I am doing some source reconstruction on paediatric MEG. I do not have structural MRIs. I do have polhemus head shapes.
1. Is it better to use a paediatric template?
2. I have constructed one using TOM toolbox and used it by selecting MRI from the inversion GUI instead of template. If this is a correct approach that I can use for each subject how do I avoid rerunning the processing of the MRI each time that is invoked by spm_eeg_inv_mesh_ui?
3. Are the hardcoded fiducial locations now in the correct place?
4. Should I use the polhemus headshape data?
Thanks for the help. Paul.