NDLI: Constraints and principles for the design of human-machine interfaces: a virtual reality approach

Content Provider	IEEE Xplore Digital Library
Author	Yaoping Hu Goodale, M.A. Eagleson, R.
Copyright Year	1999
Description	Author affiliation: Univ. of Western Ontario, London, Ont., Canada (Yaoping Hu)
Abstract	We conducted two experiments to compare the visual frames of reference used to scale grasping movements directed at objects with those used to estimate the size of the same objects - either immediately or after a 5-s delay. A virtual "workbench" was employed for presenting two different-sized objects in 3D. Subjects were instructed to pick up or estimate the marked one of the two objects. We found that the presence of the other object affected not only the estimate of the size of the target object when subjects made their estimates both immediately and after a 5-s delay, but also the scaling of grip aperture in flight when subjects picked up the target object after a 5-s delay. However, when subjects picked up the target object immediately, their grasp was scaled to the actual size of the target object and was not influenced by the presence of the other object. These findings suggest that the control of delayed motor actions utilizes the same relative metrics in allocentric frames of reference used by conscious perception, whereas the control of normal visually guided motor actions relies on absolute metrics in egocentric frames of reference. Implications of these findings for the design of human-machine interfaces are discussed.
Starting Page	1089
Ending Page	1094
File Size	672536
Page Count	6
File Format	PDF
ISBN	0780357310
ISSN	1062922X
DOI	10.1109/ICSMC.1999.823380
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-10-12
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Man machine systems Virtual reality Delay estimation Grasping Human factors Motor drives Laboratories Psychology Apertures Robots
Content Type	Text
Resource Type	Article

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