in order to correlate a test-score with the beta-values of my subjects, I
read beta-values from the images, before averaging over my ROI for each
subject. Betas in my ROI include some NaNs for some subjects. Why is this
the case (different anatomy even after normalisation?)?
How should I handle this in averaging? (set them to 0 as I do now or
somehow take these voxels out of the analysis (how could this be done
Thanks. Best wishes,