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Abstract
The objective was to develop and test a control interface to enable people with hemispatial neglect to maneuver a powered wheelchair with increased attention to their environment. A single case study was conducted using a female (aged 72 years) who had a right cerebro vascular accident five years earlier. She drove a powered wheelchair through 20 different test courses (mazes) while a computer recorded frequency of looking to the left (left checks) and an observer recorded visual targets missed and wheelchair collisions with walls and obstacles. The Mann-Whitney test was used to determine significant differences in left checks, left collisions, right collisions, and percent left targets missed between baseline and strategy phases. With the interface strategy, the subject significantly increased the number of left checks and missed fewer left targets in the test course. These results indicate that a powered-wheelchair control interface shows promise in enabling people with mild hemispatial neglect to maneuver a powered chair with greater environmental awareness and ease.