Document Detail

Controlling motion sickness and spatial disorientation and enhancing vestibular rehabilitation with a user-worn see-through display.
MedLine Citation:
PMID:  21181963     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES/HYPOTHESES: An eyewear mounted visual display ("User-worn see-through display") projecting an artificial horizon aligned with the user's head and body position in space can prevent or lessen motion sickness in susceptible individuals when in a motion provocative environment as well as aid patients undergoing vestibular rehabilitation. In this project, a wearable display device, including software technology and hardware, was developed and a phase I feasibility study and phase II clinical trial for safety and efficacy were performed.
STUDY DESIGN: Both phase I and phase II were prospective studies funded by the NIH. The phase II study used repeated measures for motion intolerant subjects and a randomized control group (display device/no display device) pre-posttest design for patients in vestibular rehabilitation.
METHODS: Following technology and display device development, 75 patients were evaluated by test and rating scales in the phase II study; 25 subjects with motion intolerance used the technology in the display device in provocative environments and completed subjective rating scales, whereas 50 patients were evaluated before and after vestibular rehabilitation (25 using the display device and 25 in a control group) using established test measures.
RESULTS: All patients with motion intolerance rated the technology as helpful for nine symptoms assessed, and 96% rated the display device as simple and easy to use. Duration of symptoms significantly decreased with use of the technology displayed. In patients undergoing vestibular rehabilitation, there were no significant differences in amount of change from pre- to posttherapy on objective balance tests between display device users and controls. However, those using the technology required significantly fewer rehabilitation sessions to achieve those outcomes than the control group.
CONCLUSIONS: A user-worn see-through display, utilizing a visual fixation target coupled with a stable artificial horizon and aligned with user movement, has demonstrated substantial benefit for individuals susceptible to motion intolerance and spatial disorientation and those undergoing vestibular rehabilitation. The technology developed has applications in any environment where motion sensitivity affects human performance.
Wesley W O Krueger
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Publication Detail:
Type:  Clinical Trial, Phase I; Clinical Trial, Phase II; Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  The Laryngoscope     Volume:  121 Suppl 2     ISSN:  1531-4995     ISO Abbreviation:  Laryngoscope     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-24     Completed Date:  2011-01-25     Revised Date:  2011-08-25    
Medline Journal Info:
Nlm Unique ID:  8607378     Medline TA:  Laryngoscope     Country:  United States    
Other Details:
Languages:  eng     Pagination:  S17-35     Citation Subset:  IM    
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MeSH Terms
Aged, 80 and over
Equipment Design
Eye Movements
Head Movements
Middle Aged
Motion Sickness / physiopathology,  therapy*
Orientation / physiology
Self-Help Devices*
Space Perception / physiology
User-Computer Interface*
Vestibular Diseases / physiopathology,  rehabilitation*
Grant Support
1R43DC004360-01/DC/NIDCD NIH HHS; 2R44DC004360-02A1/DC/NIDCD NIH HHS; 5R44DC004360-03/DC/NIDCD NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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