NDLI: From virtual to actual mobility: Assessing the benefits of active locomotion through an immersive virtual environment using a motorized wheelchair

Content Provider	IEEE Xplore Digital Library
Author	Nybakke, A. Ramakrishnan, R. Interrante, V.
Copyright Year	2012
Abstract	As we move around, in a real or virtual environment, the process of keeping track of where we are, in relation to the portions of the environment that are out of view, is referred to as spatial updating. Studies have shown that in the real world, when we use real walking to get around, this process is both effortless and automatic, but that in virtual environments, when purely virtual methods of locomotion are used, the accuracy and ease of spatial updating is significantly diminished. In this paper, we present the results of an experiment intended to assess the impact, on spatial updating performance, of enabling people to physically move about in an immersive virtual environment using a motorized wheelchair. This study is motivated by an interest in probing the potential of re-directed driving as an alternative method for enabling people to effectively explore a relatively larger virtual space while physically moving about in a smaller actual space. A total of 24 participants in our within-subjects experiment traveled through a 24' wide circularly symmetric virtual room, searching the contents of 16 randomly positioned and oriented boxes to locate 8 hidden targets, using each of the following four locomotion methods: real walking (R), virtual translation with real rotation by standing and using a body-worn joystick (S), real driving in a motorized wheelchair (W), and virtual translation with real rotation by sitting in a swivel chair and using a joystick mounted on one of its arms (J). We computed four measures of search efficiency: total distance traveled, total number of targets revisited, proportion of perfect trials, and total search time. Overall, we found that performance was significantly better with real walking than with either of the virtual travel methods, consistent with most previous findings, and that performance with the wheelchair was intermediate. These results suggest some advantage in enabling actual, as opposed to purely virtual, translational movement in a locomotion interface, and lend support to the potential viability of a re-directed driving implementation.
Starting Page	27
Ending Page	30
File Size	4100731
Page Count	4
File Format	PDF
ISBN	9781467312042
e-ISBN	9781467312059
DOI	10.1109/3DUI.2012.6184180
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Legged locomotion Visualization Navigation Wheelchairs re-directed driving locomotion methods Virtual environments spatial cognition Space exploration virtual environments
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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