The easiest thing is #2. It will produce rstd.mgh as an output, and
that's what you want.
Burmicz, Ryszarda wrote:
Hi Freesurfers,
I have tried looking this up on the list, but I don't understand
exactly what to do in this scenario: I have a group of subjects (all
controls). I want to create a surface map of the standard deviations
of the thickness values (i.e. to show how the thicknesses vary across
subjects). I am not sure what is the easiest way to go about this -
can I:
1) simply convert the ?h.thickness files to .asc and calculate the
deviations at each vertex (I am under the impression that this is not
correct as they need to be registered to a common surface first), then
convert back to .thickness and load into tksurfer
2) use mris_preproc then mris_glmfit? I don't necessarily want to
calculate any stats, but I wouldn't mind a pretty picture :)
If I have 4 groups of 10 subjects each, so if I churn these all
through glm_fit will I be able to access separate thickness files for
each group? And how can I map standard deviations for each group in
this scenario?
Many thanks,
Rysia
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