Corpus Corvus is a mixed reality performance artwork that utilizes stereoscopic projection, motion capture animation, an integrated physical/media choreographic vocabulary, and electroacoustic composition to explore the Pacific Northwest Native American myth of the raven as god and thief who steals the sun and creates the universe. Formally, the work explores the relationship between movement of a physical body and stereoscopic animation in a physical/digital three-dimensional image field. The animation is generated from motion capture data and kinesthetic media composition processes based on physical choreography. Through precise temporal alignment and stereoscopic theatrical effect, the projected animation is perceived to surround the performing body in physical space. The art/research process contextualizing Corpus Corvus is a practice-based exploration and discovery of an emerging poetics that extends the human sensory system into immersive media perceptual hyperspaces. This paper illuminates the process of research, manifestation, and discovery that informs the artwork and its poetics.