Abstract
Five neglect patients without diffuse cognitive impairment or overt constructionaldisabilities were asked to bisect lines and rectangles and to copy rectangles bisected in theirmidplane. As a group, patients showed the usual rightward bias in bisecting lines and a milderdeviation in bisecting horizontally-aligned rectangles, but showed a leftward deviation of thesubjective midline in the copying task. This was due to drawing the left half shorter with respectto normal controls but three patients also drew the right half longer (the total length was the sameas that of controls). A possible interpretation of rectangle copying results in these three patients isthat they could create a representation of the stimulus to be copied accurately enough toreproduce its total length correctly but the subjective distribution of right and left space withinthat representation was unbalanced. However, specific experimental work is needed to verify whyour patients with mild to moderate unilateral spatial neglect overrepresented the left side in a linebisection task and underrepresented it in a copying task.
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