Why scalding-hot water can seem like an ice Bashny.Net

Another surprise from our nervous sistemy



Recall how to put his hand under the water, which momentarily seemed icy, and then you suddenly realize that much burned. It happens that some people may indeed within a few milliseconds to feel that hot water - ice.

Nerves for the most part able to handle everything with what you have to face. The nerves that react to cold, tell your brain that you have touched something cold, but ignore the feeling of warmth. And the nerves that react to heat, the cold will not respond.

In everyday life, the nerves do not have to work too much, they are not overloaded, at least as long as you do not hand pokes into something really hot. If you do, then your nervous system experiences a kind of stress. Wherein responsive to the stimulus will be absolutely all the nerves that come into contact with it, and therefore, when a signal reaches the brain, many people feel cold feeling before will burn or simultaneously.

At the same time, we otdёrnem hand from boiling water as fast as we can, thanks to the reflex arc. Often, when the nerves react to the intense pain signal only reaches the spinal cord, but the motor neurons begin to work, forcing our body suspended from the source of pain. We understand that pain first appeared, but our nervous system responds to it quickly the brain, and it sometimes does not have time to realize it.

There is also the opposite phenomenon - something very cold may seem to us hot. Sometimes the cold is perceived by us as a burning sensation, and then the nerves understand what's what, and give us to understand that we are cold. Because of this, people suffering from hypothermia often feel the heat, which is why many people found frozen to death without clothes.

Have you ever confused sensations of heat and cold?

via factroom.ru