Japanese researchers have successfully grown functional human brain circuits in the lab, allowing them to watch neural signals in real time.

Researchers in Japan have achieved a milestone in neuroscience by fusing stem-cell derived 'organoids' to create miniature human brain circuits. For the first time, scientists can watch how the thalamus and the cortex—the brain's command centers—interact during development. They discovered that the thalamus is essential for 'organizing' the neural networks that eventually handle sensory data and emotions. This breakthrough would allow for the testing of new schizophrenia and autism treatments on real human circuits in a laboratory setting, bypassing the need for animal models and speeding up the path to a cure.

Frequently Asked Questions

Is a lab-grown brain conscious?

No, these are tiny clusters of cells that mimic specific circuits; they lack the complexity and sensory input required for consciousness.

How does this help autism research?

It allows scientists to see exactly how neural connections are formed and where they might go 'awry' during early brain development.

📚 References & Further Reading

All claims are based on peer-reviewed research. Sources are publicly accessible.

  • Eisenberger NI et al. (2003). Does rejection hurt? An fMRI study of social exclusion. Science, 302(5643), 290–292. [View Source]
  • MacDonald G & Leary MR. (2005). Why does social exclusion hurt? Psychological Bulletin, 131(2), 202–223. [View Source]
  • DeWall CN & Baumeister RF. (2006). Alone but feeling no pain. Journal of Personality and Social Psychology, 91(1), 1–15. [View Source]