From Big Medical Encyclopedia

DYNAMIC STEREOTYPE (grech, dynamikos relating to force power; grech, stereos firm + typos a print) — the developed conditionally reflex reaction, at a cut the answer is defined by not influencing irritant, and the conditioned excitator which is earlier applied on this place.

D.'s phenomenon of page was opened by I. P. Pavlov and was in detail studied by the school of sciences headed by it. In D.'s experiment of page comes to light by use of one of conditioned excitators on places of the irritants making a complex of several positive and negative conditioned reflexes.

The mechanism D. of page consists in formation in a brain is long the current nervous processes corresponding to space, temporary and serial features of impact on an organism of external and internal irritants.

Important biol, value D. of page is that nervous processes at it prepare, program the forthcoming activity of a brain, than the accuracy and timeliness of reaction of an organism to usual irritants of the environment is provided. Of page plays a large role in formation of various labor, sports, game skills of the person and behavior of animals if activity is uniform and often repeats. Besides, D. the page provides adaptation of an organism to the steady or in the same way changing conditions of the environment (e.g., change of illumination within a day, a change of seasons, etc.). As the stereotype can be changed, broken and again recovered by change of the temporary and serial organization of external and internal actions on an organism, he received the name of dynamic.

Clearly age features of formation of D. of page are expressed. In old age in the same way proceeding skills form more slowly, and existing — differ in stability and are difficult remade.

D.'s change by the village can be an origin neurosises (see) at the person and animals that occurs at weak type of century of N of and small mobility of nervous processes more often. D.'s alteration by the village — «nervous work the» of various tension depending on complexity of a stereotype, its durability, type of century of N of, a functional condition of a brain and age. In changes, D.'s disturbances by the village, in difficulties of installation of a new stereotype I. P. Pavlov saw fiziol, the basis for emergence of the emotions which are subjectively experienced by the person in the form of various positive and negative feelings (see. Emotions ). Jump of resistant vital stereotypes — the termination of usual occupations, relationship with people, change of a situation, climate, etc. is especially hard perceived by the person. It needs to be meant at such changes of a usual way of life as, e.g., resettlement in a new geographical belt, change of a profession, transition to pension. Similar «withdrawal pains» of D. of page demand psikhol, and physical. preparation and accounting of specific features higher nervous activity (see).

Bibliography: Anokhin P. K. Biology and neurophysiology of a conditioned reflex of M., 1968; Asratyan E. A. Sketches on physiology of conditioned reflexes, M., 197 0; Clump P. S fishing. The doctrine about a reflex and reflex activity and perspective of its development, in book: Philosophical vopr, fiziol, higher nervous activity and psychology, under the editorship of P. N. Fedoseyev, etc., page 106, M., 1963; Pavlov I. P Complete works, t. 3, book of the 2nd page 240, M. — L., 1951.

M. M. Hananashvili