A total of 70 cognitively normal older adults from local communities were included in the study. The participants met the following inclusion criteria: (1) age ≥ 60 years, (2) a score ≥22 on the Montreal Cognitive Assessment—Beijing Version (MoCA) (Yu et al., 2012), (3) no neurological deficits or traumatic brain injury, and (4) free of dementia and MCI. Data from four subjects were rejected due to consecutive excessive movement during fMRI scanning, resulting in data from a final total of 66 subjects (mean age = 70.18 years, range: 60–80 years; 26 men and 40 women).
