[Role of efferent generalization in the formation of complex forms of motor reflexes].

Dynamics of formation of a motor chain conditioned reflex was studied in rabbits. It has been found that the phenomenon of primary efferent generalization of the animals' species experience accounts for the search of adequate response activity. On the base of acquired individual experience, a secondary efferent generalization develops, which results in the setting up of an optimal structure of conditioned behaviour.