Table 2.

Values of the Amplitude of Low-Frequency Fluctuation Average z Scores in Controls, aMCI, and AD Patients

	Controls	aMCI	Mild AD
Frontal ALFF z	0.3798 (0.1907)	0.5016 (0.3859)	0.4229 (0.2255)
Temporal ALFF z	0.6052 (0.1692)	0.4518 (0.2594)a*	0.6243 (0.2212)b*
Parietal ALFF z	0.3856 (0.1895)	0.4863 (0.2881)	0.347 (0.1990)
PCC ALFF z	0.8093 (0.3400)	0.8025 (0.3241)	0.5697 (0.2346)a*.b**
DMN ALFF z	0.7093 (0.0877)	0.8008 (0.2728)	0.7238 (0.0631)

Data presented as average (SD).

^aSignificantly different from controls.

^bSignificantly different from aMCI.

^*p<0.05.

^**p<0.001.

ALFFs, amplitude of low-frequency fluctuations; DMN, default mode network; PCC, posterior cingulate cortex.