Proprioception is the usually unconscious ability to monitor the position of our body in the world. Two aspects of proprioception may be of particular interest in the construction of virtual reality environments. The first, proprioceptive memory, occurs when a recalled position of our body overrides the actual position of our body or limb. The second, proprioceptive drift, occurs when the sense of ownership of part of our body is transferred externally. The abstract navigable virtual reality environment The Sonic Stage employs these two aspects of proprioception to enhance the place illusion and plausibility of the environment.