J. Jerald, and F. Steinicke. Proceedings of IEEE VR Workshop on Perceptual Illusions in Virtual Environments (PIVE), page 4--6. (2009)
Various experiments have shown scene-motion thresholds to be
greater when the scene moves with the direction of the head turn
than when the scene moves against the direction of the head turn.
In fact, a virtual scene may appear to be more stable in space when
moving slightly with the head turn than when the scne does not
move. In this position paper, we discuss current investigations into
this illusion and possible explanations.