Hi Folks,
For a small number of subjects in a resting state seed-voxel analysis, I am getting a warning from 3dDeconvolve about collinearity between the 0th column of the Xmatrix (the baseline constant, right?) and my global mean stim-file (calculated by averaging across all voxels in the brain for each time point). Is this a situation in which I can GOFORIT anyway? Any thoughts about why there is problematic collinearity in a couple of subjects but not in the rest of the group?
Lisa