The Babinski phenomenon is a phenomenon that was discovered and named after the Russian neurologist and physiologist Ivan Babinski (1857–1930) in 1899. The phenomenon consists of the appearance of rapid and rhythmic contractions of the muscles of the hand when the skin above it is irritated.
Babinsky phenomenon is observed in humans and other animals, but may be more pronounced in people with high levels of sensitivity to touch. This phenomenon was described in 1900, and since then it has become one of the most famous and studied phenomena in neurology and physiology.
The mechanism by which Babinski's phenomenon occurs is that when the skin over the hand is irritated, for example by touching it, the brain sends signals to the muscles that respond to this irritation. As a result, the muscles begin to contract in a certain rhythm and direction. These contractions can be so fast and pronounced that the person may feel them as pulsating or trembling.
Currently, the Babinski phenomenon is being studied not only as a matter of scientific interest, but also for its clinical significance. It can serve as an indicator of the state of the nervous system and can detect certain neurological diseases, such as cerebrovascular accidents or spinal cord lesions.