Hi everyone,

I have two questions regarding FreeSurfer and FSL interoperation and it would be great if someone could help.

1) When displaying subject-level FSL FEAT data onto the FS volume using the command

"tkmedit blobby orig.mgz lh.white -overlay ./featdir/stats/zstat1.nii.gz -overlay-reg featdir/reg/freesurfer/anat2exf.register.dat fthresh 1.3 -fmid 2.3 -fslope 1” (mentioned on http://www.fmrib.ox.ac.uk/fsl/freesurfer/index.html)

What p-value does the threshold of 1.3 correspond to? Is it a zscore?

2) What would be the best way to display FSL group-level FEAT data (zstats) onto the FreeSurfer surface?

As far as I understand, the FSL and FreeSurfer Interoperation website explains how to display subject level-feat on the surface. For the group-level data, it only explains how to run group-level analyses using mri_glmfit based on lower-level FSL FEAT directories.

Is there a way to directly map the zstats from FSL group-level analyses onto the FreeSurfer surface?

Thanks in advance for the help!

Nicole