Neurology began to develop actively in the 19th century, and with the advent of Soviet power, scientists stopped humiliated and gave a "green" light in their experiments and began to listen to their opinion.
At this point, psychology and neurology are beginning to develop, many scientists and ordinary people wondered how our brain works.
In addition to the well-known works of Pavlov, who laid the "foundation" of modern neuroscience and psychiatry, there were other Russian scientists who made a significant contribution to science. One of them was, Grigory Ivanovich Rossolimo, which will be discussed below.
Physiology of the
reflex Everyone knows that under the influence of evolution, the human body changed, primarily at the genetic level, which led to the atrophy of certain organs and the development of the brain.
All this, led to the appearance of extrapyramidal system in the human brain, while in mammals it is absent. But what is its role and what does the Rossoulimo reflex have in general?
Let's imagine some kind of circuitry from class 8.For example, we have a light bulb that needs to be connected to a current of 12 volts to light, while the source of the circuit gives us 36 volts. To achieve its high-quality work, you need a rectifier of 12 volts so that it does not burn out and work normally.
Extrapyramidal system in the central nervous system( CNS) of a person takes the place of this "rectifier", only a nerve impulse, only it does not light a bulb at all, but causes muscles to contract with a certain amplitude necessary for precise movement.
For example, we need to take a seed from the table, and as soon as you think about it, you have a nerve impulse in your brain, but it does not immediately seek to innervate the muscles of the hand and fingers with the efferent trunks;in order to carry out an accurate movement. The extrapyramidal system is responsible for this very treatment.
What is the role of Rossolimo's symptom?
The pathological reflex Rossolimo, occurs when the extrapyramidal system is damaged, the cortex of the cerebral hemispheres. Most often, it is associated with neurodegeneration of brain cells, pyramidal system and black substance.
Degenerative changes are most often caused by Parkinson's disease of any etiology( chemical, physical effects on 
nerve cells, and also with the approach of old age).
The work of nerve cells is disrupted, which leads to a violation of the conductivity of nerve impulses, from the central nervous system to the reflectors( muscles).
During the lesion of nerve cells and trunks, the human nervous system begins to change and adapt, thereby creating pathological reflexes, which should not normally occur.
Reflex Rossolimo, can be called on the hands and on the foot, it is enough to gently pat the pads of the fingers on the hand or foot, and then they bend, resembling the attempt, a small child to grab for something.
This reflex, speaks of the defeat of the pyramidal system and plays a very important role in the differential diagnosis of patients with neurologic abnormalities.
Pathophysiology of the
reflex It is not surprising that the reflex arises precisely as a flexion of the foot or hand. Let's remember the small children, after all, as far as we know, there is a pathological reflex of Babinsky, up to 1.5 years of life, but for babies it is normal.
This is due to the fact that the child's brain before this period of life is not very developed, not to mention the fine motor skills for which the pyramidal system of man is responsible.
Therefore, the Rossolimo reflex is often a symptom of the initial stage of Parkinson's disease, or its other subspecies associated with a vasomotor disorder in the brain.
Symptom Rossolimo allows you to determine the presence of lesions in the system of efferent innervation of the muscles of the extremities, pinching of the motor nerves, and, what is more important, to detect lesions in the pyramidal system at the initial stage of degeneration of the pyramidal cells.
This reflex is actively used by neurologists as a general examination of the patient, due to its simplicity. It also allows to exclude afferent and intermediate innervation of the extremity.
