Janiszewski-Bekhterev Grasping Reflex

Yanishevsky-Bekhterev grasping reflex

Yanishevsky-Bekhterev's grasping reflex is an unconditioned reflex, which consists in the fact that the child automatically grabs an object that touches the palm of his hand. This reflex usually appears in infants at 2-3 months of age and disappears by 3-5 months.

The reflex was first described by Russian scientists A.E. Yanishevsky and V.M. Bekhterev at the beginning of the 20th century and named in their honor. It is believed that this reflex is innate and is associated with the immaturity of the child’s central nervous system.

The mechanism of the reflex is as follows: touching an object in the palm causes irritation of the receptors in the skin of the hand, which leads to excitation of the motor nerves and contraction of the finger flexor muscles. As a result, an automatic grasping of an object occurs without the participation of consciousness.

The physiological significance of the grasping reflex is the preparation of the hand for objective actions. As the nervous system matures, this reflex disappears and is replaced by voluntary grasping. Preservation of the reflex after 5-6 months may indicate a lag in the child’s neuropsychic development.

The Yanishevsky-Bekhterev grasping reflex (Yanishevsky-Bekhterev reflex) is a reflex movement that occurs when the skin of the face or other parts of the body is irritated. This reflex was discovered and described in 1909 by Soviet neurologist and psychiatrist Dmitry Yanishevsky and Russian neuropsychiatrist Vladimir Bekhterev.

The Janiszewski-Bekhterev reflex is a series of movements that occur in response to irritation of the facial skin. In this case, a person can make various movements, such as rubbing his nose, blinking, tilting his head, etc. This reflex is innate and can be caused by various factors such as cold, heat, pain, fatigue, etc.

The discovery of the Janiszewski-Bekhterev reflex was made during a study of human reflex activity. During the study, scientists discovered that when the skin on the face is irritated, a person can make reflexive movements that are not associated with conscious control.

Currently, the Yanishevsky-Bekhterev reflex is used in medicine to diagnose various diseases of the nervous system, such as Parkinson's disease, Alzheimer's disease, multiple sclerosis and others. This reflex is also used to assess the state of the nervous system in children and the elderly.