In the mri_glmfit.log file, there is a "SearchSpace" this will be in mm2 for surfaces and mm3 for vols. There will also be a mask.mgh file. You can run mri_segstats on this to give you the number of elements that are == 1.

doug

Stefan Brauns wrote:

Hi there,

I am running surface based analysis of cortical thickness using FreeSurfer. Sometimes I constrain the analysis to certain regions of the brain, e.g. only frontal lobes. I would like to find out how many vertices per hemisphere are analysed with the mri_glmfit I am running. Is there a possibility to get these values from any of the log-files? What is the usual number of vertices per hemisphere?

Many thanks,

Stefan

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Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer

If you do:

$>mris_calc <overlay> stats

the first line reported back will be the number of vertices. So, if you want to know how many vertices on the left hemisphere:

$>mris_calc lh.thickness stats

and look at the

Size [ XXXXXXX ]

where XXXXXX will be number of vertices.

Stefan Brauns wrote:

Hi there,

I am running surface based analysis of cortical thickness using FreeSurfer. Sometimes I constrain the analysis to certain regions of the brain, e.g. only frontal lobes. I would like to find out how many vertices per hemisphere are analysed with the mri_glmfit I am running. Is there a possibility to get these values from any of the log-files? What is the usual number of vertices per hemisphere?

Many thanks,

Stefan

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Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer