Re: [Freesurfer] talairach.m3z question

Hi oTim

sorry, it's not well documented, but the I/O code is distributed if you want to take a look. The .m3z stores a dense deformation field, plus some associated information such as the input and output ras2vox matrices, the resolution of the mesh, etc...

cheers Bruce On Wed, 13 Feb 2019, Tim Schäfer wrote:

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Dear FreeSurfer experts,

I have 2 questions on the talairach.m3z file generated by recon-all.

1. What exactly does it contain? I read its the displacement field for a non-linear transform from native space to some freesurfer space. But from which input file (or space) to which other one does it transform?

2. What's the file format? Is there a spec somewhere?

Thanks,