Technologically Modified Self–Centred Worlds. Modes of Presence as Effects of Sense in Virtual, Augmented, Mixed and Extended Reality

The paper aims to consider different forms of extended reality (virtual, augmented and mixed reality) as manifestations of “technologically modified self–centered worlds (Umwelte)”. Consequently, the problems of the subject’s presence into the world and that of the mutual world’s presence with respect to the subject, becomes central. From this perspective, we argue that different ex-tended reality technologies constitute different “modes of presence” for the user; and that these modes of presence, conceived as meaning effects, are linked to specific enunciative configurations implied by the hardware and implemented by the software of extended reality dispositives. The paper consists of two parts: the first one examines the development of various forms of extended reality and their uses in the art world, with a specific focus on Jakob Kundst Steensten’s work. The result of the first part is a reasoned classification of extended reality forms, which distinguishes between bystanding media (e.g. cinema), bystanding–immersive media (e.g. hypertexts, video games, and various forms of augmented reality), moderate immersive media (e.g. cinematic virtual reality) and radical immersive media (e.g. mixed reality). The second part analyzes various debates conducted in recent years on the concept of “presence” in the field of engineering and VR psychol-ogy, media studies, philosophy and semiotics. It then resumes the classification previously introduced in order to highlight how the modulation of different roles of co–enunciator entrusted to the user determines in each case different modes of presence in technologically modified self–centered worlds