The effect of lateralized dynamic stimuli on unilateral spatial neglect following right hemisphere lesions

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Abstract
Patients with unilateral (left-sided) spatial neglect following right-hemisphere stroke were tested for the effects of visual stimulation on performance of a line-bisection task. As predicted from research on brain mechanisms of spatial orientation and attention, dynamic visual stimuli presented on the left side substantially reduced neglect in the task. In contrast, left sided static stimuli reduced neglect significantly less and dynamic stimuli presented in the center had no effect on neglect. Neglect patients with hemianopia did not show significantly less benefit of left-sided dynamic stimuli compared to neglect patients without hemianopia, suggesting that the effect of these stimuli was unconscious and automatic. The potential advantages of lateralized dynamic stimuli in the rehabilitation of neglect are discussed.

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