Hi Dougles,

Thank your for your reply. Now I am using FSFAST, but I didn't find flags in prepro-sess which can be used in combing or dividing fMRI data. Using the following code I could get three files for each run (left cortical surface, right cortical surface and sub-cortical volume):

preproc-sess -sf subjects -fsd task_name -sliceorder so -surface fsaverage lhrh -mni305 -fwhm 5 -per-session

Can I use preproc-sess to combine files from different runs, and discard the first 4 time points of each run? If so, could you please give me a example?

Thanks and best,

Zhi

On Wed, 7 Nov 2018 at 10:16, Greve, Douglas N.,Ph.D. <DGREVE@mgh.harvard.edu> wrote:

Are you using FSFAST? If you run the preprocessing (preproc-sess), then
it will get you most of the way there.

On 11/05/2018 10:16 AM, Zhi Li wrote:
>
> External Email - Use Caution
>
> Hello FreeSurfer experts,
>
> May I ask how can I modify the surface-based fMRI data, such as
> combing two independent sessions into one or dividing one 4D into a
> series of 3D surface-based fMRI files in which each one denotes a
> single volume/TR? Thank you very much.
>
> Best wishes,
>
> Zhi
>
>
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