A team of scientists at Michigan University, under the supervision of Jimo Borjigin, has shed new light on imminent death experiences (IDE). Between 10 and 20% of patients who have survived cardiac arrest experience such episodes "and recall the extraordinary moment when their lives almost came to an end."
This study, performed on laboratory rats, shows that "for a few seconds following cardiac arrest (clinical death), the brain is more active in some respects than it was in the conscious state." In fact, during the thirty or so seconds separating cardiac and cerebral arrest (brain death), scientists have recorded "a slowing down in the electrical activity of the brain" and, at the same time, "an increase in specific cerebral frequencies". These are "gamma oscillations associated with a high state of consciousness", which are also "present during periods marked by increased acuity and visual awareness."
For Steven Laureys, renowned coma specialist at Liège University, "the study is extremely interesting and comprises stringent methodology." "It clearly shows that brain activity is not chaotic after death and that there is perfect connectivity between various parts of the brain."