Figure 2. The significant differences regarding the functional connectivity between healthy controls (HC) and individuals with subjective cognitive decline (SCD). In the delta (A) and gamma1 (B) oscillations, SCD showed significantly stronger functional connectivity between posterior cingulate cortex and precuneus, and between posterior cingulate cortex and lateral temporal cortex. In the gamma2 oscillations (C), SCD showed significantly stronger functional connectivity between posterior cingulate cortex and precuneus. *p < 0.05, **p < 0.01.