Zurcher Nicole wrote:
Hi everyone,
I have two questions regarding FreeSurfer and FSL interoperation and it would be great if someone could help.
- 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?
It is -log10(p), so p=.01 is 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?
You can use the $FREESURFER_HOME/average/mni152.register.dat. Note that this is for display only. You still have all the shortcomings of doing the analysis in the volume. doug
Thanks in advance for the help! Nicole
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