About the book: 1968 / This book arose as an attempt to summarize the results of not only a number of theoretical and experimental studies. It is also the result of long and sometimes very passionate debates. Circumstances were such that the author had to participate for several years in discussions about different aspects of the theory of the “unconscious”, which contrasted psychoanalytic, psychosomatic and phenomenalistic approaches to this theory, on the one hand , and the dialectical-materialistic understanding of the problem of unconscious forms of the psyche and higher nervous activity - on the other.