Because the skin is really a human organ, it is the largest organ in the human body and its structure is very complex.
How complex it is, for example, our skin can feel sensations, which can be traced back to various strange sensory cells in the skin. These sensory cells often shock scientists and medical scientists, just because they are so powerful, they are the masterpieces of the Creator, and cannot be replaced by any random gadget invented by humans.
Among the human body's sensory cells, the more well-known ones related to touch and pressure sensation are Meissner corpuscles, which are mainly concentrated in places such as the fingertips, tongue, and lips, and can distinguish touches of one hundred thousandth of a gram and extremely low frequencies of one hertz.
How heavy is a gram? The weight of a peanut. The human skin can feel the touch of one hundred thousandth of a peanut. Isn't it amazing? The human body itself is actually very amazing.
But this is not enough to summarize the magic of the skin. What else can the above description of Meissner's corpuscles make people shyly think of? It is the caress of love.
Meissner's corpuscle can sense whether your touch is a pretense of love for me.
this?
Does the skin contain divine knowledge?
Do you think this is something a machine can do?
...
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Another physics concept that my junior brother Mi Wenlin considered is "force". Force is actually a kind of interaction, and interaction often involves motion. You can go back and review Newton's three laws of mechanics in the physics textbook in middle school.
The sensory cells in the human skin that are related to movement are Pacinian corpuscles, which can sense one ten-thousandth of a millimeter of movement. Therefore, if a person places a toothpick on the surface of an object, he or she can feel it immediately without moving it.
If we compare this kind of human perception with that of machines, the machines are undoubtedly waste.
Laparoscopes are tools, and so are robotic arms. They really cannot reach the level of human perception. For laparoscopes, the operating rod is like holding a fishing rod and chopsticks for doctors. There are not too many links in the middle, which makes the force "transmission" simple and smooth. The robotic arm of the surgical robot has too many joints, and the various joint activities complicate the force. It is impossible to simply and accurately "transmit" the force at the head end to the doctor's hand for perception.
Professor Chang said that the spine surgery department where he works can be divided into neurosurgery, which involves the important human nervous system. I have mentioned many times before that a major pain point in neurological surgery is that a slight mistake can directly cause the patient to become disabled.
In order to avoid accidental touching during surgery, it is best not to touch. Even if you do touch, it is best to touch it lightly and immediately move your hand away.
What can doctors rely on to achieve such surgical goals?
It relies on the sensory cells in the human body that possess mysterious and terrifying powers.
Does this mean that machines will never be able to sense touch?
Not really. The laws of mechanics are there, and it is also possible to measure force by using the action of force, and to feel touch according to the action mechanism of human sensory cells. So she said, it is difficult, but not impossible. It is just that for machines to reach the level of human body, it really needs future technological breakthroughs.
"Yingying, your level—" Chang Jiawei looked at her, thinking of what classmate Fu said when he brought people back last time, and muttered who was stupid, "You should have come into contact with surgical robots. They are two idiots, and they asked you the wrong questions."
(Zhou Junpeng: Me, me, me, it’s so hard for me.)
Senior Zhou asked her if she had ever come into contact with Senior Brother Ren’s robot. She said she definitely had not, and she did not lie to Senior Zhou.
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