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Levels of control during a collaborative carrying task

Ruddle, R.A., Savage, J.C.D. and Jones, D.M. (2003) Levels of control during a collaborative carrying task. Presence: Teleoperators & Virtual Environments, 12 (2). pp. 140-155. ISSN 1054-7460

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Abstract

Three experiments investigated the effect of implementing low-level aspects of motor control for a collaborative carrying task within a VE interface, leaving participants free to devote their cognitive resources to the higher-level components of the task. In the task, participants collaborated with an autonomous virtual human in an immersive virtual environment (VE) to carry an object along a predefined path. In experiment 1, participants took up to three times longer to perform the task with a conventional VE interface, in which they had to explicitly coordinate their hand and body movements, than with an interface that controlled the low-level tasks of grasping and holding onto the virtual object.

Experiments 2 and 3 extended the study to include the task of carrying an object along a path that contained obstacles to movement. By allowing participants' virtual arms to stretch slightly, the interface software was able to take over some aspects of obstacle avoidance (another low-level task), and this led to further significant reductions in the time that participants took to perform the carrying task. Improvements in performance also occurred when participants used a tethered viewpoint to control their movements because they could see their immediate surroundings in the VEs. This latter finding demonstrates the superiority of a tethered view perspective to a conventional, human'seye perspective for this type of task.

Item Type: Article
Copyright, Publisher and Additional Information: © 2003 The Massachusetts Institute of Technology. Reproduced in accordance with the publisher's self-archiving policy.
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Computing (Leeds)
Depositing User: Repository Assistant
Date Deposited: 29 Jun 2006
Last Modified: 08 Feb 2013 17:02
Published Version: http://dx.doi.org/10.1162/105474603321640914
Status: Published
Publisher: MIT Press
Refereed: Yes
Identification Number: 10.1162/105474603321640914
URI: http://eprints.whiterose.ac.uk/id/eprint/1422

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