The Mystery of Deathbed Visions Revealed

Scientists recorded brain activity after cardiac arrest - similar to sleep or memories

The human brain at the moment of death may experience something resembling sleep or memory playback. This was reported by neurosurgeon Ajmal Zemmar from the University of Louisville, according to Metro.

The study was conducted based on the analysis of an electroencephalogram of an 87-year-old patient during the 30 seconds before and after cardiac arrest. According to the specialist, gamma oscillations were recorded during this period, which are usually associated with sleep and memory processes. Zemmar noted that the brain is capable of activating memories, including the most important ones, even at the moment of dying and for a brief time after clinical death.

These observations, according to the neurosurgeon, may change the understanding of when exactly death occurs. In addition, they raise new questions regarding the timing and permissibility of organ removal for transplantation.

Also, earlier scientists from McGill University concluded that disruption of circadian rhythms during adolescence can negatively affect brain development, especially in the presence of congenital risks - for example, if the mother had an infection during pregnancy.