Related Experiment Video
Updated: May 30, 2025
09:13
A Real-world What-Where-When Memory Test
Published on: May 16, 2017
11.2K
Network segregation during episodic memory shows age-invariant relations with memory performance from 7 to 82 years.
Håkon Grydeland1, Markus H Sneve1, James M Roe1
1Center for Lifespan Changes in Brain and Cognition, Department of Psychology, University of Oslo, Oslo 0317, Norway.
Neurobiology of Aging
|January 28, 2025
Summary
Brain network segregation is crucial for episodic memory across the lifespan. Lower segregation in functional connectivity (FC) is linked to poorer memory performance in both aging and development, suggesting age-invariant relationships.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Brain Imaging
Background:
- Episodic memory declines with development and aging.
- This decline may be linked to reduced brain network segregation.
- Understanding the neural basis of memory across the lifespan is crucial.
Purpose of the Study:
- To investigate the relationship between brain network segregation and episodic memory.
- To examine functional connectivity (FC) during memory tasks in relation to age.
- To determine if FC predicts memory performance across different age groups.
Main Methods:
- Utilized two independent samples (n=734, ages 7-82) for analysis.
- Measured within- and between-network functional connectivity (FC) during memory encoding and retrieval.
- Employed a multiverse approach to test multiple analytical choices and assess age-related differences.
Main Results:
- Memory-modulated FC predicted memory performance in an age-invariant manner.
- Task-general FC showed decreased segregation with increased age in adults, correlating with poorer memory.
- Similar segregation-memory relationships were observed in development, despite weak signs of neural differentiation.
Conclusions:
- Network segregation is a pivotal factor for episodic memory across the healthy lifespan.
- Age-invariant relationships between FC and memory suggest fundamental neural mechanisms.
- Findings contribute to understanding memory changes throughout development and aging.
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