The functional connectivity between the DMN key nodes and their alterations induced by acupuncture within the delta band (0.5–4 Hz).

The maximum of the 4 pairwise connections obtained between the two ROIs located in both hemispheres was defined as the connectivity between the two nodes (one sample t-test, P<0.05). Significant alterations induced by acupuncture at ST36 relative to NAP were based on the paired t-test (P<0.05) or with the emergence/suspension of functional connectivity following acupuncture compared with the resting state.