Overlay plots and subtraction analyses of the MRI LBM in midbrain lesions.

<p>A) Overlapping lesion plots of the patients with pathological SVV tilt show voxels primarily in the rostral paramedian mesencephalic-diencephalic regions and illustrate the exact midline zoning of the lesions. B) Subtraction analyses of patients with SVV tilt versus patients without tilt. The percentage of overlapping lesions in the patients with tilt after subtraction of the controls is illustrated by different colors coding for increasing frequencies—from violet (1%) and increasing to dark red (100%). C) Overlay plots of the subtraction analyses of patients with vs. without SVV tilt (indicated in blue) and vice versa (indicated in red), illustrating that there is no overlap of the lesion sites at the mesencephalic brainstem level.