Fig. 4

Relationship between the disease severity and identified connectivity features. Significant correlations were revealed between the headache severity score and mean of local thickness (LT) in postcentral sulcus, kurtosis of mean diffusivity (MD) in insula, mean of travel depth (TD) in caudal middle frontal, and mean of fractional anisotropy (FA) in thalamus among all patients (A-D, all P values < 0.01, after FDR correction)