yes, I agree with Matt. You need different thresholds for different areas (e.g. V1 vs. BA44) and picking one that on average gives you the right sized label seems reasonable

Bruce
On Tue, 3 Oct 2017, Matt Glasser wrote:

I would use the versions where the group size approximately matched the individual size.  

Peace,

Matt.

From: <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Trisanna Sprung-Much
<trisanna.sprung-much@mail.mcgill.ca>
Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Date: Tuesday, October 3, 2017 at 7:36 PM
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] Brodmann areas - exvivo labels

Hi there

If I wanted to compare some spatial probability maps of some sulci of interest with the Juelich Data
provided by FreeSurfer, would it make more sense to use the unthresholded Brodmann areas or the
.thresh ones? Based on my understanding of how the .thresh was created (by creating a surface area
of the average BA label that best resembled the average surface area of the label from each
individual hemisphere) in order to avoid including vertices that had a probability of 10%, for
instance, I think using .thresh would be fine. However, I thought I would verify. In input would be
greatly appreciated.


Best
Trisanna
--
Ph.D. CandidateMcGill University
Integrated Program in Neuroscience
Psychology


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