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