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Thanks Bruce.

Hi Ian

we don't register to an individual subject - we register to a probabilistic atlas compiled from many subjects. The fsaverage subjects were also generated from that data so they are in register, but the actual atlas is a .tif file that you can find as the target of mris_register in your recon-all.log file

cheers
Bruce


On Wed, 13 May 2020, Ian wrote:

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Hi guys.

After recon-all, the /surf/?h.sphere.reg file implies a registration has
been performed to an "average" subject on a sphere.  Can you please tell me
which subject this is?  Is it SUBJECTS_DIR/fsaverage?  If so, what is
SUBJECTS_DIR/fsaverage/lh.sphere.reg a registration to?  If not, where can I
find the subject that recon-all registers to?

Thanks,

Ian

--

Ian Hardingham

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