{
  "id": 8719081,
  "title": "The Brain Is Actually Two Completely Separate Organs",
  "url": "https://urgent.news/2026/09/20/the-brain-is-actually-two-completely-separate-organs",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-20T16:04:00.000Z",
  "source": {
    "name": "Slashdot",
    "slug": "slashdot",
    "url": "https://science.slashdot.org/story/26/09/20/0451204/the-brain-is-actually-two-completely-separate-organs"
  },
  "original_language": "en",
  "account": "New Stanford Medicine research has uncovered that the human brain comprises two separate, independently evolved organs, according to a recent announcement. This groundbreaking study reveals that the brain comprises a primitive component governing essential functions like heartbeats and breathing and a distinct, evolved system responsible for human abilities such as creativity, mathematics, and contemplation of our origins.\n\nThe discovery's implications extend to laboratory research, as scientists have long struggled to cultivate specific brain cells in the lab. This obstacle has impeded investigations into diseases impacting the brain stem, such as spinal muscular atrophy and amyotrophic lateral sclerosis. The key to this breakthrough lies in understanding the brain's embryonic development, where researchers discovered the hindbrain follows a distinct developmental pathway, running parallel to the formation of other brain regions rather than branching off from them.\n\nBy applying this knowledge, the team successfully guided human pluripotent stem cells to transform into functional hindbrain motor neurons for the first time. This achievement sheds light on the brain's evolutionary history, as the study found this two-organ pattern persisting in various species, including chickens, zebrafish, and acorn worms. Remarkably, even jellyfish, which separated from humans approximately 600-700 million years ago, possess two separate nervous systems, one at each end of their body.\n\nProfessor Loh explains that evolution initially created two neural systems and later integrated them spatially within the brain, a design that, while efficient, necessitates this unique structure. The researchers' findings offer fresh insights into studying brain stem diseases and could revolutionize our understanding of the brain's intricate organization.",
  "summary": "\"New research led by Stanford Medicine reveals that what we call the brain is two distinct organs that evolved independently over hundreds of millions of years,\" Stanford Medicine announced this week: The new research finding shows that the human brain consists of two ancient nervous systems cleverly packaged together — a more primitive part that regulates our hearts' beating, our breathing and…",
  "key_points": [
    "Human brain consists of two separate organs, primitive and evolved.",
    "Hindbrain develops independently, parallel to other brain regions.",
    "Two-organ pattern found in various species, including jellyfish."
  ],
  "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."
}