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A total of 9 participants with right-hemisphere stroke performed a new virtual reality (VR) wheelchair navigation test of lateralized spatial attention and neglect. The test consists of a virtual path along which participants navigate (or are navigated) as they name virtual objects encountered. There are 4 VR conditions, obtained by crossing the factors array complexity and driver. Participants performed the VR task, a real-life wheelchair navigation task, and a battery of attention and neglect tests. The VR test showed sensitivity to both array complexity and driver, exhibited strong correlations with the wheelchair navigation test, and detected lateralized attention deficits in mild patients. The VR task thus shows promise as a sensitive, efficient measure of real-life navigation.
Supported by National Institutes of Health (NIH) Grant No. R01-NS36387, Moss Rehabilitation Research Institute, and Magee Rehabilitation Foundation. Many thanks to Myrna Schwartz for collaboration in design of the VR task, Dean Klimchuk and Roman Mitura of Digital Media Works for software development, Kathryn Cross for assistance in testing participants, and Steve Jax, Susan Lipsett, and Adie Moll for help with data analysis.