EFFECT OF HISTORY TRAIL DISPLAY ON HUMAN SPATIAL PERFORMANCEUNDER NORMAL AND ROTATED SPATIAL MAPPINGS

摘要

In a rotated visual-motor mapping environment, human spatial performance is seriously affected byrnmisaligned visual and motor reference axes, resulting in elevated spatial errors. In this paper, wernpropose a history trail display in an augmented reality setting. We investigate the effectiveness of therndisplay in consecutive aiming tasks, under normal visual-motor mapping, as well as mappings with 90°,rn135°, and 180° rotations. Spatial movement error and the smoothness of the trajectories were measuredrnand compared between the history trail display and the regular video display. Our results show that,rnunder normal mapping condition, the history trail appears to help reduce the spatial movement error andrnimprove the smoothness of the movement trajectories. With rotated mappings, the benefit of the historyrntrail becomes significant only after a certain degree of adaptation to the rotated mappings has beenrnattained. The history trail appears to enhance the perception of errors, movement direction, and speedrninformation for error-correcting processes during the aiming movements.