Default Network and Aging: Beyond the Task-Negative Perspective.

@article{Maillet2016DefaultNA,
  title={Default Network and Aging: Beyond the Task-Negative Perspective.},
  author={David Maillet and Daniel L. Schacter},
  journal={Trends in cognitive sciences},
  year={2016},
  volume={20 9},
  pages={
          646-648
        }
}
During cognitive tasks requiring externally directed attention, activation in the default-network (DN) typically decreases below baseline levels ('deactivation'). Healthy aging is associated with reduced deactivation, which is usually attributed to a failure to suppress DN processes. Recent evidence instead suggests that older adults may be more reliant on DN than young adults when performing these tasks. 
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