[Mne_analysis] What Surface to use for a Morphed Cortex?

[Per A Lysne]

Hello Again,

     I am trying to do an analysis in a standardized 
coordinate space (either MNI or Talairach will work) and 
have morphed all of my subjects onto the fsaverage brain 
using the --morph option in mne_make_movie. I ask for stc 
output corresponding to the entire cortex with the --label 
option, and each subject's output shows 10242 vertices 
(using the default of --morphgrade 5). However, I am 
unsure of how to determine the standardized coordinates 
for these vertices. I assume all subjects are in the same 
space following the --morph option? If so, what surface 
can I load to get the appropriate coordinates? The 
pre-morph fsaverage surface appears to have a different, 
larger number of vertices. (My forward solutions are all 
created with --mricoord.)

     Ultimately I hope to identify a set of vertex numbers 
which are common across all subjects (after the --morph) 
and to perform an analysis on these timecourses.

     Thanks,

Per Lysne, MIND Research Network