Table 2. Differences of Correlation Coefficients for Default Mode Network in Study Set.

Correlation Coefficient of Functional Connection	Alzheimer’s Disease	Healthy Controls	P
mPFC–PCC	0.569 ± 0.202	0.718 ± 0.123	0.002
PCC–right IPL FC	0.514 ± 0.169	0.592 ± 0.110	0.062
PCC–left IPL FC	0.546 ± 0.155	0.600 ± 0.102	0.181

Correlation values were calculated using Pearson's correlation test. Data are expressed as mean ± standard deviation. FC = functional connectivity, IPL = inferior parietal lobule, mPFC = medial prefrontal cortex, PCC = posterior cingulate cortex