This paper aims to discuss the relevance that the concept of "perezhivanie" had for Soviet psychology and its implication for the development of topics that have been largely neglected both in Soviet psychology and in the Western Vygotskian tradition. According to the position defended in this paper, "perezhivanie" is not just another concept of Vygotsky´s repertoire, it was an expression of the representation of one theoretical system that evolved in Vygotsky´s thinking at the end of his work. Despite the fact that "perezhivanie" was introduced by Vygotsky in "Psychology of Art," this paper emphasizes the relevance of the concept in the final moment of Vygotsky´s work, specifically in 1933-1934, when the concept was used by the author as the unit of human development in its articulation with the concept of "social situation of development." The paper focuses on the relevance of both concepts for advancing a new definition of human development from a cultural-historical standpoint, as well as the topic of subjectivity within this theoretical account.