Just that the middle would be expected to have the least amount of motion with the rest of the run and so result in less interpolation

On 10/22/2015 05:15 PM, dgw wrote:

Hi,

I know that -per-run is the recommended motion correction option, and that it uses the middle frame as the reference for motion correction for each run. I was wondering, if there is a reference, or explanation as to why that was chosen and not some other timepoint.

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