When I ran the following command (with our data), I got the average beta values for each segmentation i.e. only 5 beta values (as opposed to 5 beta values for each subject).

mri_segstats --seg ocn.mgh --i beta.mgh --excludeid 0 --avgwf
beta.clusters.dat

That said, is it necessarily to run the previous command for each subject (in order to extract 5 beta values for each subject) or is there way to extract betas for each subject from the group analysis?

From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Greve, Douglas N.,Ph.D. <DGREVE@mgh.harvard.edu>
Sent: Thursday, November 29, 2018 11:19:33 AM
To: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Beta extraction

Use something like
mri_segstats --seg ocn.mgh --i beta.mgh --excludeid 0 --avgwf
beta.clusters.dat

See mri_glmfit-sim --help for more info on the OCN file and mri_segstats
--help for info on the avgwf file

On 11/29/2018 04:40 PM, Jahan, Bushra wrote:
> I am wondering how to extract beta values from the clusters of task
> functional data, particularly output of the multiple comparisons
> correction?
>
> Aava Jahan
>
>
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> Freesurfer mailing list
> Freesurfer@nmr.mgh.harvard.edu
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