There is strange brain activity before dying.

Researchers observed the brain activity of four dying patients, and their observations confirm that something happens in our brain just at the time of death. 

The surge of brain electric activity just before and after death is causing questions about why the brain is acting as they act. There must be some reason why the electric curves are moving how they moving. There is a possibility that this thing has something to do with NDE (Near Death) experiences. 

But before we can turn those electric curves into visual scenes, we cannot make any kind of scientific conclusions about those things. When researchers are interviewing people who visited near death, we must realize that those people are not been dead. Even if we know what happens in the neurons, we are losing one thing. This situation is similar like we know what happens in microprocessors without looking at the computer's screen. We are losing the things that people are seeing when they are dying. 

Researching death and things that are happening in the human body while they are dying is not a very new thing. But modern scanners are telling what happens in neurons. Neurons are like hardware, and electric curves inside neural systems are the software. 

Maybe Neuralink microchips can tell what people see when they are dying. But that thing requires the AI that can decode those signals. 

Sometimes this thing is criticized, because those things tell what happens in physical neurons. Those things compared with things. We know what happens in computer hardware. But we don't open any program. But they are big steps if we compare that research with methods that are based on interviews. Advancing technology like Neuralink microchips can tell people what a person sees while dying. 

Maybe the Neuralink-type microchips that are connected with the AI-based systems that can decode the images straight from brains can give us knowledge, of what happens when the patient is dying. But are we ready to face the ultimate truth? We hope and are afraid that there is something after death.  The problem is that nobody ever returned to tell what they saw when they are going over the border. 

https://bigthink.com/neuropsych/dying-brain-electrical-surge/