Ishiai S, Seki K, Koyama Y, Izumi Y
Department of Rehabilitation, Tokyo Metropolitan Institute for Neuroscience, Fuchu City, Japan.
J Neurol Neurosurg Psychiatry. 1997 Jul;63(1):23-7. doi: 10.1136/jnnp.63.1.23.
To clarify the reason why patients with left unilateral spatial neglect fail to copy the left side of a daisy like flower, not continuing to draw petals all around.
A flower was simplified and a figure was made that consisted of a large central circle and small circles surrounding it. Four patients with typical left unilateral spatial neglect performed copying and arrangement tasks to make this figure. In the arrangement task, they were instructed to arrange small circles all around the printed central circle.
The patients' identification of the composition seemed flawless. In the copying task, they showed neglect, leaving a space on the left side. They seemed to adhere to their plan to place the same number of small circles as those of the model figure. By contrast, neglect disappeared in the arrangement task.
Patients with neglect can draw the figure satisfactorily if they use a spatial strategy to arrange small circles all around. This strategy seems to improve motivation for drawing and awareness for the left space. It is considered that in the copying of figures such as a daisy, failure to use a spatial strategy plays an important part in the appearance of left unilateral spatial neglect.
阐明左侧单侧空间忽视患者无法临摹雏菊状花朵左侧部分、不能持续围绕其绘制花瓣的原因。
简化一朵花并制作一个由大的中心圆及其周围的小圆圈组成的图形。四名典型的左侧单侧空间忽视患者进行临摹和排列任务以制作该图形。在排列任务中，要求他们在印刷好的中心圆周围排列小圆圈。
患者对图形构成的识别似乎并无瑕疵。在临摹任务中，他们表现出忽视，左侧留出空白。他们似乎坚持要放置与模型图形数量相同的小圆圈的计划。相比之下，在排列任务中忽视现象消失了。
忽视患者如果采用在周围排列小圆圈的空间策略，就能令人满意地绘制图形。这种策略似乎能提高绘图的积极性和对左侧空间的意识。据认为，在临摹雏菊等图形时，未能运用空间策略在左侧单侧空间忽视的表现中起重要作用。
