{
  "id": 823501,
  "title": "Activity-dependent structural plasticity of myelinated axons tunes their excitability",
  "url": "https://urgent.news/2026/08/13/activity-dependent-structural-plasticity-of-myelinated-axons-tunes",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-13T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.07.743576v1?rss=1"
  },
  "original_language": "en",
  "account": null,
  "summary": "Myelinated axons are classically viewed as stable cables of fixed geometry. We show here that a brief subthreshold stimulation of single nodes in mouse dorsal column axons drives a rapid, lasting structural change: the stimulated axons shrink locally along the internode segments adjacent to the node, to about 70% of their diameter within a few seconds, while neighbouring glia swell to fill the…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}