I am running MELODIC with a custom registration for 3 subjects - have run all the single level analyses and run updatefeatreg/featregapply to take my registrations into standard space for the 3 subjects who need custom registrations.
Having a little difficulty with the masks though - I understand that to run a group concat, I need to create a custom mask using fslmerge of all subjects? Is this necessary and if so, could the custom registrations be the problem as cant seem to do this - get this error:
Error in size-match along non-concatenated dimension for input file
Thanks in advance
Monty
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