{
  "id": 19184293,
  "title": "The brain's 'dimmer switch' could help explain why attention drifts",
  "url": "https://urgent.news/2026/11/09/the-brains-dimmer-switch-could-help-explain-why-attention-drifts",
  "topic": "science",
  "section": "Science",
  "published": "2026-11-09T16:40:14.000Z",
  "source": {
    "name": "Medical Xpress",
    "slug": "medical-xpress",
    "url": "https://medicalxpress.com/news/2026-11-brain-dimmer-attention-drifts.html"
  },
  "original_language": "en",
  "account": null,
  "summary": "McGill researchers have discovered that serotonin, a brain chemical best known for its role in mood and mental health, also helps regulate attention. \"Our findings suggest serotonin-producing neurons deep in the midbrain act like a dimmer switch on attention,\" said Arjun Krishnaswamy, associate professor in the Department of Physiology, who co-led the study with associate professor Erik Cook. 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."
}