Brain regions with negative correlation between perfusion and the number of optic neuritis attacks.

P, P value corrected for multiple comparisons at cluster level; GM, grey matter; SWM, superficially located white matter.P：经簇水平多重比较校正后的P值（P value corrected for multiple comparisons at cluster level）；GM：灰质（grey matter）；SWM：浅部白质（superficially located white matter）。