Research Article

Multivariate Granger Causality Analysis of Acupuncture Effects in Mild Cognitive Impairment Patients: An fMRI Study

Table 2

Path weights from multivariate Granger causality analyses under the HC-Deep ( ).

ACCFGOFCSICaudateDLPFCMTGPreCNDecliveMPFCCuneusSMAM1IPLInsulaUvulaMCCHippPutamenThalamus

ACC0.66×××××××××××××××1.92××
FG×××××××××××××××××××
OFC××××××××××××××××3.45××
SI××××××××××××0.4××××××
Caudate××××××××××××××0.46××××
DLPFC×××××0.4××××××××2.1××××
MTG××2.04×××××××××××××××
PreCN×××××××××××××××××××
Declive×××××××0.94××××××2.08××××
MPFC×××××××××××××××××××
Cuneus×××××××1.29×××××××××××
SMA×0.26×××××××××0.3×××××××
M1××××××××××××××0.87××××
IPL×××××××××××××××××××
Insula×××××1.12×0.48×××××××××2.2×
Uvula×××××××××××××××××××
MCC×××××××××××××××××××
Hipp××××3.781.56×××××××××××××
Putamen××××××××0.83××××××××××
Thalamus××2.34×××××××××××1.45××××

Only the significant paths are listed. Influences are from column ROI to row ROI. × indicates the weights below the significance. Abbreviations: ACC: anterior cingulate cortex; FG: fusiform gyrus; OFC: orbitofrontal cortex; SI: primary somatosensory cortex; DLPFC: dorsolateral prefrontal cortex; MTG: middle temporal gyrus; PreCN: precuneus; MPFC: medial prefrontal cortex; SMA: supplementary motor area; M1: primary motor cortex; IPL: inferior parietal lobule; MCC: middle cingulate cortex; HIPP: hippocampus.