Others tickle us, why don't we tickle ourselves?

There is a very strange phenomenon in the human body. When they scratch themselves, they don't itch at all. Sometimes others will feel particularly itchy after touching themselves, but some people are exceptions and are not afraid of itching at all. We often call other people's tickling places? Itching meat? Why is this strange phenomenon happening? Mainly because of the cerebellum, it can be regarded as a late stress response of the human body.

First, the self-protection of the human body Everyone has a conditioned reflex, just like the knee jerk reaction. When someone knocks on your knee unconsciously, you should avoid it. This is an instinct of self-protection. Just like when someone approaches you, your nerves will naturally be tense, and when you are sure it is safe, you will relax. When you are inadvertently scratched, others will suddenly scratch you, especially in the most itchy place of your feet. The stronger our reaction will be.

Second, the scientist's experiment A female scientist in the United States did an experiment to let a magnetic vibrator record the changes of human body current, that is, when people scratch themselves, our cerebellum will send out a signal in advance to tell other parts of the body, and the itching feeling received later is safe, so people will not feel itchy, but when others scratch you suddenly, the cerebellum can't give a warning in time.

Third, why are some people not afraid of itching, while others are not? No matter how suddenly you scratch him, he still doesn't itch. Everyone has itch receptors on their skin. Some people are sensitive to this receptor and feel particularly itchy when they move a little, but some people don't respond because their cerebellum doesn't receive this stimulus signal and doesn't respond, so they don't feel itchy.