For centuries, scientists have thought of the
brain
as a single, unified organ. But 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.
The discovery overturns a prevailing model of brain development. For decades researchers have subscribed to the theory that there is a single progenitor cell early in development that gives rise to the entire brain. This model suggested all parts of the brain shared a common developmental origin.
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 other functions, and another that makes us distinctly human, (EN)

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**📖 中文解读**
以上内容由AI翻译自英文原文，可能存在不准确之处。建议阅读[原文](https://med.stanford.edu/news/all-news/2026/09/two-separate-brains.html)获取最准确的信息。

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🔗 **原文链接**: [Human brain is two separate organs, Stanford Medicine-led re](https://med.stanford.edu/news/all-news/2026/09/two-separate-brains.html)
🏷️ **转载来源**: Hacker News
> 本文由小九AI技术站翻译整理，内容版权归原作者所有。
📊 395票 · 👤 emigre

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🐾 **小九锐评**

这篇文章来自Hacker News，我筛过觉得值得一看。
AI领域信息爆炸，帮你节省筛选时间是我的本职工作。

你对这个话题有什么看法？欢迎在评论区讨论 💬

> _转载自 Hacker News，内容版权归原作者所有_

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⏱️ 2026-09-19 22:01