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Effect of visuo-haptic co-location on 3D Fitts' task performance

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4 Author(s)
Fu, M.J. ; Dept. of Electr. Eng. & Comput. Sci., Case Western Reserve Univ., Cleveland, OH, USA ; Hershberger, A.D. ; Sano, K. ; Cavusoglu, M.C.

Given the ease that humans have with using a keyboard and mouse in typical, non-colocated computer interaction, many studies have investigated the value of co-locating the visual field and haptic workspaces using immersive virtual reality (VR) modalities. Significant understanding has been gained by previous work comparing physical tasks against VR tasks, visuo-haptic co-location versus non-colocation, and even visuo-haptic rotational misalignments in VR. However, few studies have explored all of these paradigms in context with each other and it is difficult to do inter-study comparisons because of the variation in tested motor tasks. Therefore, the goal for the current study was to characterize human performance of Fitts' point-to-point reaching task - an established test of manual performance - in the physical, co-located/non-colocated VR, and rotated VR visualization conditions. A key finding was the significant decrease observed in end-point error for tasks performed in a co-located virtual reality environment. The results also showed cyclic performance degradations due to rotational visuo-haptic misalignments that were consistent with trends reported by the literature.

Published in:

Intelligent Robots and Systems (IROS), 2011 IEEE/RSJ International Conference on

Date of Conference:

25-30 Sept. 2011