Mechanisms of unilateral spatial neglect in relation to laterality of cerebral lesions.
Mechanisms of unilateral spatial neglect in relation to laterality of cerebral lesions.
复制标题
单侧空间忽视与脑损伤偏侧性的机制。
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
M. Silveri
中科院分区：
文献类型：
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作者：
Guido Gainotti;P. D'Erme;Diego Monteleone;M. Silveri
对38名对照组、90名右侧脑损伤患者和82名左侧脑损伤患者进行了重叠图形测试和寻找动物测试。重叠图形测试被认为适合研究对落在视野中央部分的微小但复杂的刺激的注意力集中，搜索动物测试旨在研究对大片非个人空间的探索。这项研究旨在检验这样一种假设，即待探索的空间范围可能对左右脑损伤患者的单侧空间忽视有不同的影响。左右脑损伤患者在搜索动物实验中均表现出空间探索的不对称性，对侧较同侧更易出现遗漏。然而，在重叠图形测试中，只有右侧脑损伤患者表现出明显的遗漏位于复合图案左侧的图形的倾向。这一发现表明，在单眼注视过程中，无法从一侧刺激中提取视觉信息可能是右脑病变导致的单侧空间忽视的最典型特征。
An Overlapping Figures test, considered as appropriate to study focusing of attention on small but complex stimuli falling in the central parts of visual field and a Searching for Animals test, designed to study the exploration of large parts of extrapersonal space, were administered to 38 controls, and 90 right and 82 left brain-damaged patients. The investigation was designed to test the hypothesis that the extent of space to be explored may have a different influence on unilateral spatial neglect of right and left brain-damaged patients. Both right and left brain-damaged patients showed an asymmetric exploration of space on the Searching for Animals test, making more omissions on the side contralateral to the damaged hemisphere than on the ipsilateral one. On the Overlapping Figures test, however, only right brain-damaged patients showed a clear tendency to omit figures lying on the left side of the composite pattern. This finding suggests that inability to extract visual information from one side of the stimuli during single eye fixations may be the most characteristic feature of unilateral spatial neglect resulting from right hemisphere lesions.