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Dear all, I've performed parametric modulation and found a peak voxel that highly correlated with task difficulty score. I then went back to traditional GLM that modelled different tasks as separate regressors. I opened that GLM results, p value set to 1.0, cluster size > 0. Whole brain is colored as expected. But when I manually inputted the peak voxel coordinates into the left bottom window, the z coordinate auto jumped from 2 (I inputted) to 1. I wonder why I could not crosshair at exactly my desired location? Thanks for help. Best, Andy