Researchers from the Paris Brain Institute have gained new insights into the neurological process of dying. They found that during oxygen deprivation, the brain undergoes a series of changes, including a surge in gamma and beta waves that are potentially linked to near-death experiences. This is followed by a “wave of death” that marks the transition to total cessation of brain activity. The researchers also discovered that this wave originates in the layer 5 pyramidal neurons of the neocortex. Furthermore, the study suggests that this wave can potentially be reversed if resuscitation occurs within a specific time window, challenging the notion of a flat electroencephalogram as a definitive marker of ceased brain functions.
https://neurosciencenews.com/death-brain-neuroscience-25356/