Distribution of regional cerebral blood flow (rCBF).

The maps illustrate the quantitative CBF values (ml/100g/min) across all subjects in the control (A) and migraine groups (B). Group-wise changes in rCBF are displayed in the bottom row (C). Note the bilateral clusters of significantly increased rCBF in the primary somatosensory cortices (S1). Statistical images are displayed with a cluster probability threshold of P<0.05, corrected for multiple comparisons (FWE). Data are shown in Caret PALS space, with left/right orientations marked.