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  • Title: What is line bisection in unilateral spatial neglect? Analysis of perceptual and motor aspects in line bisection tasks.
    Author: Ishiai S, Koyama Y, Seki K, Nakayama T.
    Journal: Brain Cogn; 1998 Apr; 36(3):239-52. PubMed ID: 9647677.
    Abstract:
    Three patients with unilateral spatial neglect could detect the difference of length between the right and left segments when a line had a transection mark. To examine the effect of response mode, the manual line bisection task and a new "line bisection task by fixation" were given to the patients. In tasks that used lines with no landmark, they showed apparent rightward errors. The results suggest that line bisection is not a task that examines the ability of patients with neglect to compare the right and left extents of a line. Where to fixate as the subjective midpoint may determine the rightward errors of bisection, whether manual response is used or not.
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