Doctors define death based on when the heart stops beating, immediately cutting off blood supply to the brain.  Once this happens, blood no longer circulates to the brain, which means brain function halts almost instantaneously.  Therefore, understanding the stages of brain death to advance the development of intervention prolonging the brain resuscitation window is highly desirable.  Now, a study from researchers at Yale University partially … Continue reading Researchers partially revive a pig’s brain four hours after death.