US scientists have conducted an experiment in restoring circulation and cellular activity in the brains of pigs which had died four hours earlier.
The study shows brain cell death could be halted and some connections could be restored, offering a new way of researching diseases such as Alzheimer’s and Parkinson’s.
No signals were found in the brains that would indicate awareness or consciousness, however, and, as British expert Professor Derek Hill, from University College London, said, the study raises questions on ethical implications.