Scientists implant human brains in mice and make breakthrough discovery

A team of researchers has implanted human brains in mice in an experiment to measure the test subjects' responses to sight, smell, and touch.

Scientists implant human brains in mice and make breakthrough discovery
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1 minute & 6 seconds read time

Scientists have been using stem cell research for many years, and as development in the technology progresses, researchers have been able to grow human organs and even small human brains successfully.

Scientists implant human brains in mice and make breakthrough discovery 01

While growing these human organs, such as livers, has proven to be successful, transplanting them into a new body is where the complications lay, as some bodies simply reject the new organs. Notably, a study that was published in late December 2022 details scientists at Stanford University taking human brain organoids and implanting them into rats for the very first time.

Additionally, the researchers discovered the mini-human brains began to make connections with the rat's brain, forming pathways between the mini-human brain and the rat's neurons. The new study details researchers for the first time being able to see the responses from the rats when they were exposed to different tests.

For example, the researchers flashed bright white lights at the rats and watched the response from the different cells within the mini human brain. The researchers were able to measure a significant electrical spiking which was traced back to the visual cortex of the brain.

So, why is this important? In the past, researchers have experienced difficulties measuring the mini human brain's responses in test subjects as the brain activity was fleeting, only lasting a few milliseconds. But now progress has been made, which will enable researchers to delve into deeper testing that will, over time, yield interesting results about how the brain responds to different senses.

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NEWS SOURCES:bgr.com, nature.com

Jak joined the TweakTown team in 2017 and has since reviewed 100s of new tech products and kept us informed daily on the latest science and space news. Jak's love for science, space, and technology, and, more specifically, PC gaming, began at 10 years old. It was the day his dad showed him how to play Age of Empires on an old Compaq PC. Ever since that day, Jak fell in love with games and the progression of the technology industry in all its forms. Instead of typical FPS, Jak holds a very special spot in his heart for RTS games.

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