EN
The study is a contribution to the discourse which by the means of the cybernetic terms has created a widely spread and diversely formulated concept of cyborg. The authoress of the study transcends this discourse by the effort to use this typically anthropological concept as a topological metaphor. The cyborg - a cybernetic organism - has been conceived in the framework of thinking limited by the fundamental cybernetic terms like 'back-coupling loop' and 'pen and closed circuit'. She uses these terms as aesthetic categories and metaphors and examines two types of performances which she calls performance of closed and open circuit. In this way she tries to contribute to a better understanding of medial performances as a specific form of artistic creation on the boundary between the theatre and the medial art.