Hi,
for my second-level statistics I have been running a fixed-effects analysis as well as a random-effects-a. with mri_glmfit (11 subjects). It turns out that the fixed-effect-analyis shows hardly any effect while in the random-effects-analysis there are results (at a low threshold: 1.6 or 2). Vision versus rest looks fine in both and gets even stronger in the fixed effects. Is there a statistical reason for stonger outcomes in random-effects for results around the threshold or is this a hint for an error in my analysis? Thanks, Kathrin
my command was: mri_glmfit --y rh.ces.nii --osgm --glmdir rh.ffx.osgm --nii --mask ../rh.mask.nii --yffxvar rh.cesvar.nii --ffxdofdat ../ ffxdof.dat --surf fsaverage rh my computer: snapjudge my path: autofs/space/bomba_020/users/ksherbst/data/brightghosts_loc/ loc_group_11 and I am running freesurfer stable 4