Halligan P W, Burn J P, Marshall J C, Wade D T
University Department of Clinical Neurology, Radcliffe Infirmary, Oxford, UK.
J Neurol Neurosurg Psychiatry. 1992 Nov;55(11):1060-8. doi: 10.1136/jnnp.55.11.1060.
From a large sample of patients who sustained a first stroke, 98 patients were selected with unilateral left brain damage and 92 with unilateral right brain damage. Examined on a visual search task (Star Cancellation) approximately four years after onset, we found a comparable incidence of visual inattention in the two groups. Despite this quantitative similarity, the qualitative pattern of performance was different in the two impaired samples. Patients with right brain damage showed a distinctive linear relationship whereby omission errors increased from right to left across the stimulus page. Within the left brain damaged sample, two subgroups could be discerned. As expected, one subgroup showed more contralesional than ipsilesional errors, but the other subgroup was comparable to the sample with right hemisphere damage. The reasons are discussed for these qualitative differences, drawing particular attention to the importance of motor/manual factors in the determination of performance on visual search tasks.
从大量首次中风患者样本中，选取了98例单侧左脑损伤患者和92例单侧右脑损伤患者。在发病约四年后对他们进行视觉搜索任务（星形删除测试）检查，我们发现两组视觉注意力不集中的发生率相当。尽管在数量上相似，但两个受损样本的表现定性模式不同。右脑损伤患者表现出一种独特的线性关系，即遗漏错误从刺激页面的右侧到左侧增加。在左脑损伤样本中，可以区分出两个亚组。正如预期的那样，一个亚组的对侧错误比同侧错误更多，但另一个亚组与右脑损伤样本相当。讨论了这些定性差异的原因，特别关注运动/手动因素在视觉搜索任务表现测定中的重要性。
