“…This can cause a participant to become unbalanced. The theory argues that by providing a rest frame (a static or dynamic object or line which is relative to the real world, for example, a virtual nose [ 56 ] or a motion singularity point to focus on during navigation [ 58 ]) to give the participant a sense of direction while immersed in a VE, would decrease CS. While there are contradicting cases where a rest frame did not reduce the effects of CS [ 1 , 12 , 128 ], it was still added to the CyPVICS Framework as it could be a possible cause with a possible solution for some users [ 1 , 12 , 49 , 57 , 62 , 128 ].…”