Synaptic Plasticity Dynamics in Aging Cognition
Summary
Synaptic plasticity—the capacity of neuronal connections to strengthen or weaken in response to activity—is fundamental to learning and memory. During ageing, this adaptive flexibility undergoes alterations at multiple scales, from molecular shifts in calcium handling and receptor composition to structural changes in dendritic spines and network connectivity. Age-associated dysregulation of calcium homeostasis, in particular through altered expression or function of L-type voltage-gated calcium channels, contributes to impaired induction of long-term potentiation (LTP) and a bias towards long-term depression (LTD) in hippocampal circuits. Concurrently, epigenetic modifications and oxidative damage disrupt gene transcription programmes that underlie synaptic maintenance and remodelling. These convergent processes erode cognitive reserve and reduce the efficiency of information encoding, recall and cognitive flexibility. At the systems level, compensatory mechanisms may transiently preserve performance, but accumulating deficits eventually manifest as declines in spatial memory, pattern separation and executive control. Understanding the interplay between excitatory and inhibitory synaptic dynamics, intracellular signalling cascades and glial-mediated support is essential for developing interventions to maintain cognitive health into later life. Emerging evidence highlights that lifestyle factors such as enriched environments, physical exercise and dietary modulation can promote adaptive synaptic plasticity and stave off age-related cognitive decline, offering valuable routes towards successful cognitive ageing.
Research from Nature Portfolio
No recent Nature Portfolio content available.
Synaptic Plasticity Dynamics in Aging Cognition publication trend
The graph below shows the total number of articles in synaptic plasticity dynamics in aging cognition across all publications each year (not limited to Nature Index journals).
Technical terms
Synaptic plasticity: The ability of synapses to modify their strength or efficacy in response to increases or decreases in activity.
Long-term potentiation (LTP): A sustained increase in synaptic strength following high-frequency stimulation, considered a cellular basis for learning.
Long-term depression (LTD): A long-lasting reduction in synaptic efficacy induced by specific patterns of activity, contributing to synaptic scaling and memory erasure.
Calcium homeostasis: Regulation of intracellular calcium concentration, essential for signalling pathways that govern plasticity and neuronal survival.
Hippocampus: A medial temporal lobe structure critical for encoding and retrieving spatial and episodic memories.
Cognitive reserve: The brain’s resilience to pathological damage, influenced by genetic, environmental and lifestyle factors.
References
- Neural ageing and synaptic plasticity: prioritizing brain health in healthy longevity. Frontiers in Aging Neuroscience (2024).
- Age‐related deficits in neuronal physiology and cognitive function are recapitulated in young mice overexpressing the L‐type calcium channel, CaV1.3. Aging Cell (2023).
- Hippocampal hyperphosphorylated tau-induced deficiency is rescued by L-type calcium channel blockade. Brain Communications (2024).
About these summaries
This Nature Research Intelligence Topic summary is created with the cited references and a large language model. We take care to ground generated text with facts, and have systems in place to gain human feedback on the overall quality of the process in line with our AI principles. We strive to create accurate and useful summaries for people unfamiliar with the research topic and that supports this goal. These pages are a beta release and will be updated as we learn how best to help people gain value from a research topic summary.
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.