{
  "id": 11382690,
  "title": "An atlas of functional ensembles in the zebrafish hindbrain links structural and molecular features to behavior",
  "url": "https://urgent.news/2026/10/01/an-atlas-of-functional-ensembles-in-the-zebrafish-hindbrain-links",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-01T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.30.752102v1?rss=1"
  },
  "original_language": "en",
  "account": "The vertebrate hindbrain, crucial for survival and behavioral control, still holds many mysteries regarding its overall functioning. To demystify this, researchers have mapped out the functional organization of the hindbrain in larval zebrafish, a species with transparent bodies that allow for comprehensive imaging of the entire hindbrain region. They began by compiling pre-existing functional populations from previous studies into an atlas, complete with potential mammalian counterparts. This library was then supplemented with new ensembles of co-active neurons, identified without prior labels, through whole-hindbrain light-field recordings in behaving larvae.\n\nThe study identified 70 recurrent ensembles across individuals, which were verified in independent light-sheet datasets. These ensembles also aligned with spatial gene-expression patterns, maintaining bilateral symmetry. Behavioral characterization revealed known ensembles associated with eye and tail movements, but also uncovered novel associations with fin and mouth movements. By analyzing co-activity, molecular signatures, and neuronal projections, the researchers suggested a candidate recurrent inter-regional circuit. This atlas thus offers a unified spatial reference for integrating functional, molecular, and anatomical data, paving the way for future circuit discoveries.",
  "summary": "The vertebrate hindbrain sustains functions essential for survival and behavioral control, yet how it operates as a whole remains poorly understood. Here we map its functional organization in larval zebrafish, whose transparency permits imaging of the entire hindbrain. We first curate established functional populations from the literature into an atlas annotated with putative mammalian…",
  "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."
}