I think the motion correction works a little better if done to a
reference inside each run, and there's probably less interpolation in
the end
On 3/20/17 11:04 AM, Feilong Ma wrote:
Hi FreeSurfer Experts,
I was reading the document of preproc-sess, and it seems -per-run is
recommended instead of -per-session. Here is the part:
-per-run
Motion correct and register using the middle time point of each run.
This is the option that you should use.
-per-session
Motion correct and register using the first time point of the first
run. This is mainly for compatability with version 4.
Is there a reason to preprocess each run separately? I know some
people motion correct and register all EPI volumes to the same
reference EPI volume, which also works well.
Thanks,
Feilong
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