Saying goodbye at the end of his life is not only a tragic complaint to the deceased who is far away from the world, but also the last time he is "secret talk" with the deceased. Many people have filled their words in their hearts, thinking that the deceased cannot hear it.
Dear farewell
Little do you know that after a person dies, people can hear the sounds around you, and saying goodbye at the end of death also requires Be careful in words and actions .
people cannot be resurrected in death
In ancient times, many emperors and generals had the absolute power of , and wanted to pursue eternal life and let themselves enjoy unlimited years.
From Qin Shihuang to Han Wudi seeking immortality hyphenation , those who pursue immortality end in failure.
The reason is that birth, old age, sickness and death are the natural law of , , and are the laws that all life should follow. No life can disobey, and human beings are no exception.
Qin Shihuang who pursues immortality
So friends, does not need to be afraid of when facing death, because this is something that all living things will face.
It is worth mentioning that death is not sudden for , it will have a slow process.
Human death is divided into three periods of medically , the first , endangered . This period is the beginning of human death, from the dissipation of consciousness to breathing weakening . All signs indicate that human death seems irreversible .
But this is not the last moment, it just needs a miracle to happen. This miracle is lower than the probability of winning the lottery, and it can be regarded as a last shot at the gates of hell.
people will die
second, false death period, at this time, humans no longer have breath , and even the heart no longer beating, but the important organs in the body are still working hard in , waiting for the miracle to happen .
In medicine, as long as people in the second stage receive timely assistance, there is still a very small probability that can be saved.
In ancient times, people judged human death by breathing and heartbeat, which was obviously an unscientific behavior of .
Third, eventually dies period, at this time, humans usher in the stop of body metabolism, all organs of the body no longer operate .
Body organ strike
Obviously, no matter how advanced medical methods are, people in the third period cannot "recover" , unless they are asked to , Sun Wukong to ask for people in the Hall of Hell.
hearable sounds
There is a custom of mourning in many places. Local people believe that after death, the soul still resides in place, and you can hear the wailings of relatives and friends.
Crying is not only a expression of one's own sadness, but also a respect for the deceased . In such a sad day, it should be filled with a low atmosphere.
Scientists conducted an experiment to verify whether people could hear the outside world after they died.
期0期
Scientists found a patient who died naturally in as the experimental subject and inserted a device to test brain wave . After
, scientists asked the family to speak again. did not expect that the brain waves really jumped , which means that the deceased could really hear what people said.
However, the brain waves soon disappeared from . As it turns out, the time when the deceased could hear the sound was extremely short. Why can I hear
?
Many people think this is a very anti-science thing. People die and they can even hear voices from the outside world.
The sound can still be heard by dead people
In fact, it can also be explained by scientific principles. The brain death and physiological death of humans are not synchronized with . After many organs stopped working, the human brain was still receiving various signals.
is just this kind of 's function of receiving signal is gradually declining, so when people's voices enter the ears of the deceased, the ears pass on the sound information to the brain.
Because the ears are not very complex human organs, it has worked for countless years before humans' lifetime, and after death, there will inevitably be " conditioned reflex " , which naturally transmits the sound waves in the past.
The structure of the ear is not complicated
, and the ears transmit signals to energy does not consume much . The remaining ability in the human body is enough to support the ears' function of receiving sounds.
As for whether the deceased can analyze what exactly is after being transmitted to the brain, it is hard to say.
After all, the functions in the brain have been weakening. Originally, this sentence was said by the outside world. The brain would translate it into . Another sentence .
Finally, even the auditory system was paralyzed . After death, it took less than a minute to receive the external signal .
After death, the auditory system will be paralyzed
So, you must say goodbye to death in time and with caution , which is a kind of respect for the deceased.
At this time, some people may be curious about what kind of human hearing is the operating principle of that makes humans look so magical.
auditory
According to relevant research, human ears can identify more than 400,000 different sounds . The ears as "receivers" are divided into external ear , middle ear , and inner ear.
rings between the outside, middle and inside are closely linked to , and work together to focus on human hearing.
The structure of the ear
Outside sounds propagate sound waves through the medium. These sound waves are firstly collected through the auricle of the external ear, and the unique narrow mouth of the auricle vein, and transmitted to the eardrum.
eardrum mainly plays an amplification role. After all, the sound waves transmitted from the outside will lose energy in the process. The eardrum amplifies the sound waves, making the sound waves transmitted into the interior more clear.
sound waves will not disappear because they are too small. fails to be transmitted to the inside and disappears , so the lower limit of human hearing is still very low, reaching 0dB.
Eardrum is very important
An independent race living in the South Asian waters - Bayao . In order to facilitate diving, the Bayao people will pierce the eardrums.
This makes the Bayao people's hearing lower limit much higher than that of ordinary humans. People also need to speak extremely loudly to the Bayao people so that they can hear clearly.
The eardrum is still very important to humans and has a great impact on people's lives, especially for students. When taking the college entrance examination for English listening, the powerful eardrum function was highlighted.
Listening test first requires hearing the sound
The eardrum is transmitted to the position of the middle ear through vibration. There are three small bones in the middle ear and . These three small bones play a role of "resonance". While transmitting sound waves, they also amplify the sound waves. The role of
Finally, it enters the inner ear through the small bones. The inner ear is the core of the "conversion device", and there are tens of millions of hair cells distributed in the inner ear.
Under the impact of sound waves, these hair cells convert sound wave information into biological information, and collect these biological information, and transmit it to the brain.
sound delivery process
hair cells are equivalent to an video format converter , converting unknown video files into MP4, mkv and other formats that can be played.
There is also an semicircular canal in the inner ear , semicircular canal mainly manages the body's sense of balance in space . When there is a problem with the semicircular canal, people will experience symptoms such as dizziness.
People who often experience vertigo can go to hospital to check to see if there is any problem with their semicircular canal.
Let’s say that, when biological information is passed into the mind, the brain will immediately process this information and become an understanding existence.
Semicircular canal
This forms a complete auditory system. Although this system looks like is troublesome to , it does not take even half a second to operate.
, and most of the functions in it only require simple vibration, which is why hearing can still last for a period of time after death.
Three deaths in sociology
Human death conditions are certainly not controversial in medicine, However, many sociologists re-divided human death into three stages .
Death is redefined
The first stage is the death of physiologically. After all functions of the human body stop, it means that the person will completely end physically.
The second stage is the death of social . That is, after is buried , the person no longer has a social identity and becomes the so-called "silent ghost".
The first two stages are something that everyone has to go through, and no one can escape.
The third stage is people's forgetting . As time goes by, generation after generation, leads people to forget their ancestors .
Being forgotten is true death
When no one can think of this person, this person is the death of mentally .
This is a very common thing for ordinary people. It will be forgotten by people soon after a few generations.
At this level, some people have achieved "eternal life", such as Qin Shihuang . As the first emperor in Chinese history, people will always remember him.
In a sense, Qin Shihuang truly realized "eternal life" . Perhaps this is Qin Shihuang's original way to seek immortal elixir.
Qin Shihuang who was remembered by history
There are many celebrities in history, and celebrities will be remembered forever. Some people can't help but sigh that the general public is just the dust of history, too small.
However, it is precisely because of dust that there is desert , and water droplets that there is an ocean. As long as you shine in your post, you will definitely make a lot of contributions.
