Fig. 2

The altered FC with TTH in the slow-5 band. Tension-type headache showed altered FC in the slow-5 band (0.01–0.027 Hz) compared with healthy control. A Enhanced FC between R medial SFG and R temporal pole/right inferior temporal gyrus. B Reduced FC between R MFG and R lateral occipital cortex. C Enhanced FC between R MFG and L supramarginal gyrus. FC, functional connectivity; SFG, superior frontal gyrus; MFG, middle frontal gyrus; R, right; L, left