Table 7. The functional connectivity between the DMN key nodes and their alterations induced by acupuncture within the gamma band (30–48 Hz).
| Functional Connectivity | Gamma | ||||
| Rest | NAP | P-value | ST36 | P-value | |
| MFG-SFG | 0.2814 | 0.2980 | 0.669 | 0.2909 | 0.860 |
| SFG-ACC | 0.0775 | 0.1195 | 0.584 | 0.1283 | 0.092 |
| ACC-PCC | 0.0751 | 0.0760 | 0.191 | 0.0698 | 0.789 |
| PCC-STG | 0 | 0 | – | 0.0466 | – |
| STG-AG | 0 | 0 | – | 0 | – |
| AG-IPL | 0.6653 | 0.6769 | 0.303 | 0.6568 | 0.497 |
| IPL-MTG | 0.1366 | 0.1321 | 0.551 | 0.1397 | 0.796 |
| MTG-MFG | 0 | 0 | – | 0 | – |
| MFG-ACC | 0.3825 | 0.3614 | 0.495 | 0.3610 | 0.239 |
| SFG-PCC | 0.0842 | 0.0868 | 0.672 | 0.0718 | 0.583 |
| ACC-STG | 0.1050 | 0.1060 | 0.346 | 0.1039 | 0.592 |
| PCC-AG | 0.1843 | 0.1504 | 0.120 | 0.1756 | 0.578 |
| STG-IPL | 0.0594 | 0.0424 | 0.227 | 0.0517 | 0.066 |
| AG-MTG | 0.1843 | 0.2440 | 0.009 | 0.1883 | 0.828 |
| IPL-MFG | 0 | 0 | – | 0 | – |
| MTG-SFG | 0.0448 | 0 | – | 0.0561 | 0.125 |
| MFG-PCC | 0 | 0 | – | 0 | – |
| SFG-STG | 0 | 0 | – | 0 | – |
| ACC-AG | 0 | 0 | – | 0 | – |
| PCC-IPL | 0.2886 | 0.3226 | 0.127 | 0.2845 | 0.942 |
| STG-MTG | 0.2578 | 0.2568 | 0.166 | 0.2395 | 0.928 |
| AG-MFG | 0 | 0 | – | 0 | – |
| IPL-SFG | 0 | 0 | – | 0 | – |
| MTG-ACC | 0 | 0 | – | 0 | – |
| MFG-STG | 0.1073 | 0.0953 | 0.226 | 0.0930 | 0.611 |
| SFG-AG | 0 | 0 | – | 0 | – |
| ACC-IPL | 0.1130 | 0.1176 | 0.772 | 0.0976 | 0.491 |
| PCC-MTG | 0.0489 | 0.0533 | 0.772 | 0.0841 | 0.265 |
The maximum of the 4 pairwise connections obtained from 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.