Why don t people feel pain after falling asleep?

It also depends on the level of pain, higher levels of pain can affect your sleep, and lower levels of pain may not be felt after you fall asleep, so why?

Pain is a perception rather than a feeling.

Pain is not something you feel. Rather, it is the perception of nerve sensation. Chemoreceptors detect odors and thermoreceptors detect light. Sight and smell are the sensations of physical things, such as light waves and chemicals, on the human body. However, pain is not the same.

Neuronal factors.

When you sleep, pain signals don't reach your brain. The brainstem consists of a medulla oblongata.

Pons and midbrain.

Compose. The brainstem is the highway from the motor and sensory systems to the brain. The nociceptor is a type of sensory neuron that is active when the tissue is damaged and is the cause of pain sensations, and it travels from the damaged site through the brainstem to the brain.

So, when you fall asleep, there is no connection between the sensory neurons and the brain, and there is no pain. You can think of it as connecting street lights. When you connect the first set of lights to the second set of lights, it will allow current to flow through both sets of lights.

If the second set of lights is disconnected, then electricity will only flow through the first set of lights.

Why do I sometimes wake up in pain?

For example, sleeping on your own arm can cut off blood circulation, make your hands tingle and sore, and make you wake up in pain. Because you are asleep, you are unconscious, and it is not until the pain is at a critical level (tissue damage can occur due to lack of blood flow) that the body becomes aware of the feeling of pressure. You can also feel pain when you fall asleep, depending on the level of pain.

After falling asleep, the body's nervous system works the same way, and may be dull, but it will still receive information. But the pain nerves will close, and we won't feel the pain at this time. ‍‍

I think this is because when we sleep, not only the sense of pain, but also other sensory functions fall into a certain degree of dormancy, which is the need of the body, when we are awake, the body needs to consume a lot of energy, not only our actions need to consume energy, but also the feeling and thinking consume energy. Sleep provides us with a certain period of recuperation, which gives the body the energy it needs for the next day. So I don't feel any pain when I fall asleep. ‍‍

This is a normal phenomenon, during sleep, the body's cells are dormant and slow to respond to pain, which indicates that they have been in a deep sleep. The quality of sleep is relatively good. ‍‍

I know that people can enter a deep sleep state after sleeping for about half an hour, and generally all body parts except the nose are basically in a state of complete relaxation at this stage, so the sensory nerves are not working. ‍‍

I think that people do not rest during sleep, although the ** and other sensory organs do not rest. However, because the relevant parts of the brain are at rest, the person will not feel the pain during this time, so the pain will not be felt. ‍‍

Personally, because the brain is at rest when it is resting, the pain nerves are dormant during sleep and do not feel pain. ‍‍

As far as I know, when people are asleep, most of our body's cellular systems are at rest, so we don't feel pain. ‍‍

I studied medicine and I know that the reason why I lose pain sensation when I fall asleep is because the brain secretes a neurotoxin that paralyzes the nerves. ‍‍

In my case, this will happen when you sleep deeply, because the nerve cells will be unconscious, so we can relax and rest. ‍‍

In general, after falling asleep, there is usually no feeling for the outside world, about an hour or two later. At this time, our sensory cells are at rest. ‍‍

People don't feel pain when they sleep, they only feel mentally. It seems to wake up but not wake up, it seems to be asleep, it can't be shouted if it wants to, it can't move if it wants to, people feel puzzled and terrified, as if there is a transparent thing pressing on the body, plus with the dream, it is given the name of "image" ——— ghost press. Actually, this is called a "nightmare" in medicine

Like dreams, nightmares are a physiological phenomenon。When a person suddenly wakes up from a dream, a part of the nerve center of the brain has already woken up, but the nerve center that innervates the muscles has not fully woken up, so although there is an uncomfortable feeling, he cannot move, and if someone wakes him up or pushes him, the nightmare will disappear immediately.

In fact, this phenomenon is very common. For example, we can't fully punch our fists when we wake up; Many people have to slow down for a few more minutes after waking up, which is the reason why the central nervous system is not working synchronously.

Lying on your back, with a thick cover or hands on your chest, excessive nervousness during the day, and overeating are all triggers for nightmares.

If the listener is attentive, they will find that those who have experienced "ghost press" are all lying on their backs, and if they sleep on their side and avoid the above triggers, nightmares will not occur.

Our sleep cycle is composed of onset of sleep, light sleep, deep sleep, and finally rapid eye movement (REM). Sleep paralysis is mainly related to the early onset of REM, resulting in inconsistent coordination during REM phases.

In fact, during the REM phase, the body is essentially in a state of restIn addition, the connection signal with the brain is also temporarily interrupted, which is a defensive measure, so that the human body will not realize the dream in real life, such as when dreaming of hitting someone, it will not actually act and punch and kick the person next to the pillow.

If the pain is terrible, you'll wake up.

People can feel pain while sleeping.

You may not feel it, and you may think that you are dreaming.

How is that possible? The pain will wake you up.