Scientists restored some activity within the brains of pigs that had been slaughtered hours before, raising hopes for some medical advances and questions about the definition of death.
But the work revealed a surprising degree of resilience among cells within a brain that has lost its supply of blood and oxygen, he said.
Such research might lead to new therapies for stroke and other conditions, as well as provide a new way to study the brain and how drugs work in it, researchers said. They said they had no current plans to try their technique on human brains. The brains showed no large-scale electrical activity that would indicate awareness. Restoring consciousness was not a goal of the study, which was aimed instead at exploring whether particular functions might be restored long after death.
When scientists removed these neurons from treated brains and stimulated them electrically, the cells responded in a way that indicated viability.
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