Thanks Bruce for your speedy response.

I am dealing with chimp scans and therefore am trying to avoid anything to do with Talairach. The surfaces have reconstructed pretty nicely using recon-all, but I’d like to create an average surface now.

I will try as you suggest

Trisanna Sprung-Much

Research Associate

McGill University

MD Anderson Cancer Centre

From: <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of "Fischl, Bruce" <BFISCHL@mgh.harvard.edu>
Reply-To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Date: Thursday, March 25, 2021 at 10:59 AM
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Subject: Re: [Freesurfer] make_average_subject without Talairach transform

Sure, I guess you can just run mri_average. I think also if you specify the file name for the transform as identity.nofile to any binary that takes an lta file, the code will internally create an identity transform.

I won’t look pretty though….

Cheers

Bruce

From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> On Behalf Of Trisanna Sprung-Much
Sent: Thursday, March 25, 2021 10:19 AM
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] make_average_subject without Talairach transform

External Email - Use Caution

Hi there

I’d like to know if it is possible to create an average volume and average surface of several subjects without having to incorporate the Talairach transform and no transform at all.

Thank you,

Trisanna Sprung-Much

Research Associate

McGill University

MD Anderson Cancer Centre