Journal
ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION
Volume 92, Issue 8, Pages 1298-1304Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.apmr.2011.03.011
Keywords
Assistive technology; Brain injuries, traumatic; Rehabilitation; User-computer interface; Wheelchairs, computer simulation
Categories
Funding
- National Institute on Disability and Rehabilitation Research
- U.S. Department of Education [H133A020502]
- Human Engineering Research Laboratories, VA Pittsburgh HealthCare System
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Mahajan H, Spaeth DM, Dicianno BE, Collins DM, Boninger ML, Cooper RA. Comparison of virtual wheelchair driving performance of people with traumatic brain injury using an isometric and a conventional joystick. Arch Phys Med Rehabil 2011;92:1298-304. Objective: To compare wheelchair driving performance in a driving simulator using a conventional joystick and an isometric joystick. Design: Randomized, cohort study. Setting: A research facility based in a hospital or in an independent living center. Participants: Participants (N=20; 12 men, 8 women; mean age +/- SD, 30.62 +/- 10.91y) who were at least 1 year post-TBI. Interventions: Driving performance using an isometric joystick compared with a conventional movement joystick. Main Outcome Measures: Average trial completion time, and trajectory-specific measures measured orthogonal to the center of driving tasks: root mean squared error, movement offset, movement error, and number of significant changes in heading. Results: After statistically controlling for driving speed, participants were able to complete the driving tasks faster with an isometric joystick than while using a conventional movement joystick. Compared with the conventional joystick, an isometric joystick used for driving forward demonstrated fewer driving errors. During reverse driving the conventional joystick performed better. Conclusions: The customizable isometric joystick seems to be a promising interface for driving a powered wheelchair for individuals with TBI.
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