Figure 2.
Grey matter volume differences between patients with VSS and controls. Using VBM, we observed grey matter volume increases (visual snow > control) in the right fusiform gyrus (A), the right middle temporal gyrus (B), the right parahippocampal gyrus (C), the left superior temporal gyrus (D) as well as the right anterior cingulate cortex (F) in patients with visual snow syndrome. Grey matter decreases were found in the left superior temporal gyrus (E). VBM statistical parametric maps at a threshold of P < 0.001 uncorrected for multiple comparisons are overlaid on a normalized standard T1-weighted MRI. VS = visual snow.