Systematicity and integrity of language in the context of integrated knowledge about human

The article states that the systematicity of language is formed on the basis of its ontological integrity and becomes available for study only in the light of interdisciplinarity with reference to the basic dimensions of Human species-specific organization of mind and brain activities. The author offers a working definition of the language system in the context of its integrity, considers epistemological issues related to the emergence of conceptually different approaches to the explication of language systematicity, focuses on the role of material substrate of the language, considers fundamental domestic contribution to the development of the general theory and systemology of language proceeding from the ontological grounds for its integrity. The author touches upon applied significance of this approach for the development of the general theory of language and its practical implementation at such Universities where courses of general linguistics are taught, as well as in the construction of interdisciplinary dialogue, and in the study of problematic aspects of interethnic communication. On the example of the psychological meanings of several lexemes functioning as operators in the promotion of ethnopolitical concepts which are behind culture-bound scenarios of different participants in interethnic communication, the author shows the role of the integrity of the image of the world as a semantic substrate of language consciousness in the adaptation of ethnopolitically marked borrowings in the Russian language. The analysis was carried out on the basis of the latest associative-verbal databases collected within the framework of the SIBAS project (Siberia and the Far East: 2008-2022), in comparison with similar, earlier all-Russian and synchronous European sources.