How long does a person remain conscious after death?

Theoretically, five minutes after the heart stops beating, the brain tissue dies and the person loses consciousness, but the exact situation is uncertain and difficult to experiment.

The moment the brain dies, there is no consciousness, because consciousness is generated from the brain, and if the brain dies, there will be no thoughts.

In an instant, there will be no consciousness, because the person has already died, so there is basically no development in the research on this aspect.

You will be unconscious for about ten minutes, because you will still be conscious after you die, but you will not be breathing, and you can still faintly hear some sounds.

In the 2-6 hours after the death of the people, the cries of family members can be heard. And during this time, consciousness is also very complete.

Scientists have found that after death, brain cells do not die instantly, but slowly stop. As long as there are brain cells working, people can hear the outside world. After death, a small part of the blood flows through the brain.

The brain also functions for a while. At this time, the sound is transmitted to the cerebral cortex by the movement of capillaries inside the ear, and the bioelectricity generated is transmitted to the cerebral cortex. As long as the brain cells are working, people can hear voices and even store all the thoughts they had before death for a few hours after death.

However, at this time, the brain can no longer dominate other organs in the body, so even if you can hear the cries of your family, you have no way to respond, and you can only be surrounded by deep powerlessness.

Changes in the human body twenty-four hours after death.

A few minutes after death, the temperature of the body begins to gradually drop, usually in the early morning of the room, it can drop at an hourly rate, and it will generally drop to the same level as the surrounding environment, this process is called corpse cold. At the same time, cells in the human body die and rupture due to lack of oxygen, and the contents of the cells leak.

A day or so after death, the corpse will begin to turn green (called corpse green), and at the same time, the body will release a large amount of putrefactive gas, increasing the pressure in the corpse, resulting in the blood in the body being squeezed out of the surface layer by gas, and putrefactive blisters appear. <>

According to relevant studies, after the end of life, people will go into cardiac arrest. In life, most people have several main ways to judge life and death, probing the nose, listening to the heart to see if there is a sudden arrest, and feeling the body temperature. From this, it can be known that cardiac arrest is the way to determine whether a person is dead or not.

When judging the heart, you don't know the situation of the brain, after the heart arrests, the brain consciousness still exists, and the moment you announce the death message, it may be heard, and this kind of information is still a little uncomfortable.

Since there is still consciousness in the brain, how long can it remain? It doesn't take long, and the average brain cell will be deprived of oxygen after 6 minutes, after which consciousness will gradually disappear, which is the real end of life. The end of life can be divided into two types, one is the loss of the heartbeat, and the other is the death of the brain.

After the above understanding, it can be known that cardiac arrest can only be regarded as the first stage, and the real end is in the death of the brain.

The death of the brain, at the beginning, is the first organ in the body to lose its function, which causes the body to be unable to act, and as the residual consciousness in the brain slowly dissipates, the brain will also end completely due to lack of oxygen. There should have been people who were successfully resuscitated after cardiac arrest. It can only be said that the consciousness of the brain is strong enough to overcome the problem.

In the process of judging life and death, don't just rely on sniffing and listening to the heartbeat, and find a professional in time is correct.

If you talk about self-consciousness, it is generally within fifteen seconds. If it is brain activity, it is completely lost after brain death, that is, in 30 to 40 minutes. Some people say that for a few minutes, it is when the cerebral cortex stops moving, but the consciousness does not dissipate.

After the heart stops beating, the brain can still survive for 5 to 6 minutes. And brain death also means that a person actually dies. Man is completely unconscious. Respiratory and brainstem reflex activity will stop.