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The researchers used a unique, blood – oxygen – filled, anticoagulant solution called BrainEx, to act as an artificial blood substitute. They filtered and pumped through the circulatory system of the head and began to shockingly see renewed circulation, a metabolic response, and even spontaneous activation of the synapse.
However, the research team was quick to point out, none of these answers being close to what would constitute a conscience or a conscience. If the team had detected alpha or beta brain waves between 8 and 30 Hz, she reportedly said she administered heavy anesthetics and cooled her head quickly to suppress any cellular activity.
Researchers already have the ability to keep slices of living and electrically active mammalian brain tissue a few minutes at a time, but it is impossible to restore at least a fundamental cellular function after four hours of oxygen and nutrients.
As Hank Greely, a professor at Stanford, points out, Nature This research has potentially transformed a pair of long-standing beliefs about brain death. First, the idea that your consciousness dissipates within minutes of brain death, and secondly, that the only way to prevent this is to restore circulation in the organ as quickly as possible. If we are able to partially resuscitate the pig brain four hours after the fact, it is possible that this brain is not as dead as we think.
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