Doctors Intrigued by Treatment That Makes Dead Brains Show Signs of Life

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Reviving Brain Activity After Death

Scientists were astonished to find that recirculating a cocktail of preserving agents through a severed pig’s head caused the animal’s brain to show signs of life. As New Scientist reports, basic cellular functions were restored in the dismembered brain — something previously thought impossible once blood flow had ceased.

While the pig brain wasn’t exactly oinking at the farm after the treatment, in scientifically significant ways it was seemingly brought back from the brink of death. This ghoulish experiment could have implications for future efforts to reanimate a dead human brain as well.

Ethical Questions and Human Applications

Yale School of Medicine neuroscientist Zvonimir Vrselja and his colleagues are now looking to try the technique on human brains — efforts that, needless to say, carry thorny ethical ramifications. The definition of when a person has died remains a lively debate among health practitioners.

“We are trying to be transparent and very careful because there’s so much value that can come out of this,” Vrselja told New Scientist.

Some argue that death occurs when the heart stops beating. Others define it as the point when the brain’s functions cease entirely. Neuroscientists have already found that brain activity can extend far beyond cardiac arrest; research shows the brain can even light up after the heart stops.

“The dying brain actually starts this massive rescue effort,” University of Michigan neuroscientist Jimo Borjigin told New Scientist. Borjigin found in a 2026 study that the brain “appeared to be on fire” after four dying people were taken off life support. “If we can better understand what’s going on at this point, I believe we could resuscitate it,” he added.

The BrainEx Breakthrough

Vrselja and his team developed a special drug cocktail called BrainEx that prevents the brain from being damaged by the sudden surge of oxygen-rich blood following brain death. In a 2026 experiment involving pig brains, the researchers managed to bring some activity back four hours after decapitation.

Even approaching the point of consciousness with a donated human brain could raise major ethical issues, forcing the team to tread carefully. “We had to develop new methods to make sure no electrical activity is occurring in an organized way that might reflect any kind of consciousness,” Vrselja told New Scientist.

Current and Future Uses

For now, the team is using BrainEx to test treatments for Alzheimer’s and Parkinson’s. Similar techniques could also prolong the shelf life of donor organs, potentially saving lives.

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