Default Network and Aging: Beyond the Task-Negative Perspective.
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.
Department of Psychology and Center for Brain Science, Harvard University, Cambridge, MA, USA. Electronic address: davidmaillet@gmail.com.
David
D
Maillet
Department of Psychology and Center for Brain Science, Harvard University, Cambridge, MA, USA.
Daniel L
DL
Schacter
D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology* / Q000523:psychology*; D001288:Attention / Q000502:physiology*; D001921:Brain / Q000000981:diagnostic imaging* / Q000502:physiology*; D001931:Brain Mapping; D006801:Humans; D008279:Magnetic Resonance Imaging; D009415:Nerve Net; D009434:Neural Pathways / Q000000981:diagnostic imaging; D013647:Task Performance and Analysis; D055815:Young Adult
aging; deactivation; default network; memory; mind-wandering; task-unrelated thought