Hello all,
I am interested in comparing two brain-behavior correlations that were set up as separate multiple regressions in SPM. I converted my two T maps to Z maps, and then subtracted one from the other.
Now I have the difference Z map, but am not sure how to determine the significance of the correlation difference within the ROI that we have. Can anyone recommend a strategy to determine the significance of the difference between these correlations?
Thanks so much!
Tamara
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