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Updated: Feb 28, 2026
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Brain Imaging Investigation of the Neural Correlates of Emotional Autobiographical Recollection
Published on: August 26, 2011
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Semanticized autobiographical memory and the default - executive coupling hypothesis of aging
R Nathan Spreng1, Amber W Lockrow1, Elizabeth DuPre1
1Cornell University, Ithaca, NY, USA.
Neuropsychologia
|June 19, 2017
Summary
As we age, cognitive abilities shift, with fluid skills declining and crystallized skills remaining stable. Increased connectivity between brain networks supports knowledge-based memory recall in older adults.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Aging Research
Background:
- Cognitive aging involves a transition from fluid to crystallized abilities.
- Neural mechanisms underlying this cognitive shift are not fully understood.
- The default-executive coupling hypothesis proposes increased connectivity supports goal-directed behavior in older adults.
Purpose of the Study:
- To investigate the neural mechanisms of cognitive aging in autobiographical memory.
- To test the default-executive coupling hypothesis in relation to crystallized cognition.
- To examine the relationship between brain network connectivity and memory recall in aging.
Main Methods:
- Recruited a large sample of healthy young (n=103) and old (n=80) adult participants.
- Assessed autobiographical memory recall, distinguishing between episodic and semanticized content.
- Analyzed the strength of connectivity between the default mode network and executive control regions.
Main Results:
- Stronger default-executive coupling predicted more semanticized autobiographical memory recall in older adults.
- This relationship was specific to the older adult cohort.
- Findings provide direct evidence for the default-executive coupling hypothesis in autobiographical memory.
Conclusions:
- The study identifies default-executive coupling as a neural mechanism underlying crystallized cognition in aging.
- This network shift may represent an adaptive strategy for goal-directed behavior despite declining fluid abilities.
- Enhanced connectivity supports knowledge-based memory retrieval in later life.
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