Cited by 24Transcranial Magnetic Stimulation StudiesDementia and Cognitive Impairment ResearchNeural dynamics and brain function

Cortical excitability and the aging brain: toward a biomarker of cognitive resilience

Open access
Palermo, Sara, Di Fazio, Chiara, Scaliti, Eugenio, Stanziano, Mario, Nigri, Anna, Tamietto, Marco·2025·Frontiers in Psychology

Abstract

This perspective article addresses the potential use of cortical excitability (CE) as an indicator of cognitive health in aging people. Changes in CE may be considered a sign of resilience to cognitive decline in old age. The authors describe research on CE and its link to cognitive function in older adults and emphasize that it is a promising, non-invasive measure of healthy aging. They also address the current challenges in its implementation, the need for standardized measurement protocols and possible future avenues of research. If properly considered, CE could pave the way for early detection of cognitive decline and facilitate targeted interventions to promote cognitive resilience.

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Crossref · 10.3389/fpsyg.2025.1542880

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  • Cortical excitability can be conceptualized as a sensitive and malleable biomarker of cognitive resilience, capturing the brain's capacity to adapt to prolonged cognitive and emotional demands across the lifespan.

    “Recent evidence suggests that cortical excitability can be conceptualized as a sensitive and malleable biomarker of cognitive resilience, capturing the brain’s capacity to adapt to prolonged cognitive and emotional demands across the lifespan (Palermo et al., 2025).”

    From Enhancement of modern defense capabilities by convergence of cognitive neuroscience and artificial intelligence (2026) · cites this paper as Palermo et al., 2025

    The Discussion describes cortical excitability as a potential dynamic biomarker of cognitive resilience, and the Introduction links it to the brain’s adaptive potential. The paper focuses on aging and does not establish that this biomarker captures adaptation to prolonged cognitive and emotional demands across the lifespan. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • These processes are grounded in Hebbian plasticity and dynamic regulation of cortical excitability, reflecting the balance between excitatory and inhibitory processes underlying learning, adaptation, and stress responsiveness.

    “From a mechanistic perspective, these processes are grounded in Hebbian plasticity, whereby repeated co-activation of neural populations strengthens synaptic efficacy (“cells that fire together, wire together”), and in the dynamic regulation of cortical excitability, which reflects the balance between excitatory and inhibitory processes underlying learning, adaptation, and stress responsiveness (P”

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Authors
Palermo, S., Di Fazio, C., Scaliti, E., Stanziano, M., Nigri, A., & Tamietto, M.
Affiliations
  • Fondazione IRCCS Istituto Neurologico Carlo Besta (IT)
  • University of Turin (IT)
  • Tilburg University (NL)
Venue
Frontiers in Psychology
Published
2025-02-18
Volume
16
Pages
1542880-1542880
ISSN
1664-1078 (ISSN-L)
OpenAlex
W4407694858
Cited by
24
References
69
Citations by year
2026: 10 · 2025: 14
FWCI
8.66
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Psychology (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • Research portal (Tilburg University) (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion, cc-by-nc-sa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Università degli Studi di Torino (PALS_RIC_N_COMP_24_01)
Topics
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
cortical excitability, healthy aging, cognitive resilience, cognitive decline, biomarkers, older adults, early detection of cognitive decline, measurement standardization

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