Cited by 137Neural dynamics and brain functionNonlinear Dynamics and Pattern FormationAdvanced Neuroimaging Techniques and Applications

Activity-dependent myelination: a glial mechanism of oscillatory self-organization in large-scale brain networks

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Noori, Rabiya, Park, Daniel, Griffiths, John D., Bells, Sonya, Frankland, Paul W., Mabbott, Donald, Lefebvre, Jeremie·2020·Proceedings of the National Academy of Sciences

Abstract

Communication and oscillatory synchrony between distributed neural populations are believed to play a key role in multiple cognitive and neural functions. These interactions are mediated by long-range myelinated axonal fiber bundles, collectively termed as white matter. While traditionally considered to be static after development, white matter properties have been shown to change in an activity-dependent way through learning and behavior-a phenomenon known as white matter plasticity. In the central nervous system, this plasticity stems from oligodendroglia, which form myelin sheaths to regulate the conduction of nerve impulses across the brain, hence critically impacting neural communication. We here shift the focus from neural to glial contribution to brain synchronization and examine the impact of adaptive, activity-dependent changes in conduction velocity on the large-scale phase synchronization of neural oscillators. Using a network model based on primate large-scale white matter neuroanatomy, our computational and mathematical results show that such plasticity endows white matter with self-organizing properties, where conduction delay statistics are autonomously adjusted to ensure efficient neural communication. Our analysis shows that this mechanism stabilizes oscillatory neural activity across a wide range of connectivity gain and frequency bands, making phase-locked states more resilient to damage as reflected by diffuse decreases in connectivity. Critically, our work suggests that adaptive myelination may be a mechanism that enables brain networks with a means of temporal self-organization, resilience, and homeostasis.

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Crossref · 10.1073/pnas.1916646117

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  • Even small changes in myelination can exert profound effects on neural circuit dynamics and consequently on cognitive function.

    “even small changes in myelination can exert profound effects on neural circuit dynamics and consequently on cognitive function (Steadman et al., 2020; Noori et al., 2020; Pajevic et al., 2014).”

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Authors
Noori, R., Park, D., Griffiths, J. D., Bells, S., Frankland, P. W., Mabbott, D., & Lefebvre, J.
Affiliations
  • University Health Network (CA)
  • Centre for Addiction and Mental Health (CA)
  • Hospital for Sick Children (CA)
  • University of Toronto (CA)
  • Krembil Research Institute, University Health Network, Toronto, ON M5T 0S8, Canada;
Venue
Proceedings of the National Academy of Sciences
Published
2020-06
Volume
117
Issue
24
Pages
13227-13237
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W3029829036
Cited by
137
References
61
Citations by year
2026: 17 · 2025: 20 · 2024: 16 · 2023: 28 · 2022: 28 · 2021: 22 · 2020: 6
FWCI
11.29
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Gouvernement du Canada | National Research Council Canada (RGPIN-2017-06662)
  • Gouvernement du Canada | Canadian Institutes of Health Research (PJT-156164)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Physical Sciences › Computer Science › Computer Networks and Communications › Nonlinear Dynamics and Pattern Formation
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
activity-dependent myelination, white matter plasticity, oligodendrocytes, neural oscillations, phase synchronization, conduction velocity, large-scale brain networks, network resilience, network models
MeSH terms
Animals, Brain, Models, Neurological, Myelin Sheath, Nerve Net, Neural Conduction, Neuroglia, Neuronal Plasticity, Primates, Electroencephalography Phase Synchronization, Connectome, White Matter

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