a user interface provides , in a fixed screen display , for both decoupling head and body turning and for integrating them without the need for specialized equipment . using successive synchronized viewport and contained display image movement steps , the present invention first cues the user that their body is facing in the same direction as their head . then , by simulating the head - turn / body - turn process that humans follow when looking around for something , the invention cues the user to understand that when they look around , they are turning first their head and then their body .