Human Movement Performance in Relation to Path Constraint - The Law of Steering in Locomotion

Authors:
Shumin Zhai;Rogier Woltjer
Affiliations:
-;-
Venue:
VR '03 Proceedings of the IEEE Virtual Reality 2003
Year:
2003

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Abstract

We examine the law of steering - a quantitative modelof human movement time in relation to path width andlength previously established in hand drawing movement- in a VR locomotion paradigm. Participants drove asimulated vehicle in a virtual environment on paths whoseshape and width were manipulated. Results showed thatthe law of steering also applies to locomotion.Participants' mean trial completion times linearlycorrelated (r2 between 0.985 and 0.999) with an index ofdifficulty quantified as path distance to width ratio for thestraight and circular paths used in this experiment. Theiraverage mean and maximum speed was linearlyproportional to path width. Such human performanceregularity provides a quantitative tool for 3D humanmachine interface design and evaluation.