From Big Medical Encyclopedia

CHAIN REFLEX — the difficult reflex act in which one reflex is a proximate cause of emergence of the subsequent.

For the first time the term «chain reflex» was applied by Zh. Loeb in 1899. Mechanisms of formation of C. rubles studied Ch. Sherrington, I. P. Pavlov, G. P. Konradi, L. G. Voronin, etc. Special value for a research of specific mechanisms of formation of C. discovery of the principle of a feed-back in live organisms (the return afferentation, according to P. K. Anokhin), i.e. existence of the mechanism of the alarm system from the periphery in c had river. N of page about the effect reached by an organism. At the same time the nature of the subsequent action — the termination of the reflex act or formation of the next link of a compound, chain reflex depends on information coming to a brain.

Numerous pilot studies showed that the chain nature of processes is not limited only to reflex acts of the lowest order — the movement, blood circulation, breath. Emphasizing universality of this principle, I. P. Pavlov extended it and to higher nervous activity (see) — on instincts. About existence of the interrelation and strict sequence of separate stages characteristic of mental activity, I. M. Sechenov wrote. The principle of consecutive and successive expansion of separate behavioural acts when the result of the previous action defines the beginning and effectiveness of the subsequent, is one of the universal principles of the theory of functional systems of P. K. Anokhin (see. Functional systems).

Bibliography: Anokhinp. K. Biologiya and neurophysiology of a conditioned reflex, M., 1968; P and in l about in I. P. Complete works, t. 3, book 1, page 317, t. 4, page 25, M. — L., 1951; K. V Pike perches. General theory of functional systems, M., 1984.

V. I. Vadikov.