Figure 5.

The varying curve of different age ranges in the time course. The global efficiency of young age range was always higher than it of the older age range in whole time course. The DMN local efficiency of elderly reached its peak at the beginning, while it of young reached its peak in the intermediate process. The CCN local efficiency of elderly reached its peak at the beginning, while it of young reached its peak in the second half. The SN local efficiency of elderly maintained a relative low level, while it of young had been growing up [Color figure can be viewed at http://wileyonlinelibrary.com]