Dear SPMers,
I am trying to set a functional ROI for my analysis but the peak voxel is slightly off from my expected area - but the cluster size is relatively large (142) and spreads to the area I had originally expected. In this case, it is acceptable to select the coordinate that is not the peak voxel (which empirically & anatomically makes more sense) as my functional ROI and compare mean beta weights for different conditions?
Thanks,
Catherine
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