Hello, 

I am trying to do a paired difference analysis of two runs of probtrackx (I have already put them on the surface). The two conditions are “central” and “far” for each subject. I have already checked the individual subjects data and it does indeed have values. 

 

Here is a sample of my subject list:

100206.central

100206.far

100307.central

100307.far

100408.central

100408.far

…etc.

 

Here is my mris_preproc script:

mris_preproc --target fsaverage --hemi lh --isp $in/FP/100206.central/lhsurf.mgh --isp $in/FP/100206.far/lhsurf.mgh --isp $in/FP/100307.central/lhsurf.mgh --isp $in/FP/100307.far/lhsurf.mgh --isp $in/FP/100408.central/lhsurf.mgh --isp $in/FP/100408.far/lhsurf.mgh … --out $out/preproc_FP_cf_lh/lh.paired-diff.FP_cf.mgh --f $sublist --paired-diff

 

The output log shows no errors, the number of inputs equals the number in the subject list and it creates a file but it’s all zeros. I just have no idea as to why this would happen?

 

Thanks,

 

Sara Sims