This thesis develops a phenomenology of immersive cinematic spectatorship. During an immersive experience in the cinema, the images, sounds, events, emotions, and characters that form a fictional diegesis become so compelling that our conscious experience of the real world is displaced by a virtual world. Theorists and audiences have long recognized cinema’s ability to momentarily substitute for the lived experience of reality, but it remains an under-theorized aspect of cinematic spectatorship. The first aim of this thesis is therefore to examine these immersive responses to cinema from three perspectives – the formal, the technological, and the neuroscientific – to describe the exact mechanisms through which a spectator’s immersion in a c...