On 8/27/17 4:35 AM, Xianwei Che wrote:
Dear freesurfer experts,
I am wring to ask a stupid question, which I did not find the answer
in the mailing list.
I am going to run stats on the thickness data as described in the
tutorial, do I have to run separately for each hemisphere? If I am not
wrong, we have to specify the hemi in the data assembling stage. Are
we able to run once for both hemis in the glm and correction stage?
When you run recon-all, it will processes both hemis. After that, eg,
mris_preproc, you must specify the hemi
If not, I am a little confused in the correction stage, which we
specify the --2spaces in the simulation. As indicated in the tutorial,
this is for adjusting p for both hemis.
Right, if you are eventually going to analyze both hemis, then you need
to correct for multiple comparisons across both hemispheres.
Another question is about subcortical areas. Do we have to run stats
for the cortical and subcortical areas separately?
Do you mean an ROI volume or surface area analysis? Then, yes.
Thanks
/-------------/
Mr Xianwei Che
PhD Candidate
Monash Alfred Psychiatry Research Centre (MAPrc)
Central Clinical School & the Alfred
Monash University
Level 4, 607 St Kilda Road, Melbourne 3004, Australia
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