Hm_spm.rar -

: Verify that the head model and sensor array use the same coordinate system (e.g., MNI or CTF).

: Use the "3D Source Reconstruction" button to load your head model. Ensure your structural MRI and sensor locations (fiducials) are coregistered, as mismatches can lead to scaling errors where the head appears smaller than the sensor helmet. HM_SPM.rar

: If running a surface analysis, check for errors where covariate dimensions (like realignment parameters) do not match the number of functional scans. : Verify that the head model and sensor