Thanks for the reply, Doug!
Best, Feilong
On Wed, Mar 22, 2017 at 1:24 PM, Douglas Greve greve@nmr.mgh.harvard.edu wrote:
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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