On 12/30/2019 7:55 PM, Star Xi wrote:

External Email - Use Caution

Dear FS experts,

I’m processing the task-related fMRI using FS-FAST. I check the quality assurance and modified some subjects’ registration file(named new one as “register_manual.lta”). Then I do the first level analysis and group analysis.

My first question is:

should I apply the new registration file into the following first level analysis and group analysis?

You should keep the registration filenames the same, then just re-run selxavg3-sess. it will determine that the registration file changed and then update everything afterwards.

I found a tutorial may be answer my question , but I’m not sure about it.

http://surfer.nmr.mgh.harvard.edu/fswiki/MultiModalTutorialV6.0/FMRIGroupAna...

Assemble the data using new registration file by the command:

mris_preproc --target fsaverage --hemi lh \

--iv fbirn-101/ces.nii fbirn-101/register.lta \

--iv fbirn-103/ces.nii fbirn-103/register.lta \

--iv fbirn-104/ces.nii fbirn-104/register.lta \

--projfrac 0.5 \

--out lh.ces.mgh

Then use “mri_surf2surf”, “mri_glmfit” to do the group analysis.

My second question is: does the following two procedures both feasible for fMRI group analysis ?

1. Isxconcat-sess —> mri_glmfit —> mri-glnfit-sim 2. mris_preproc —> mri_surf2surf —> mri_glmfit —> mri-glmfit-sim

Both are feasible, but isxconcat-sess will be easier

Thank you!

Regards,

Star

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