Small M, Cowey A, Ellis S
MRC Research Centre in Brain and Behaviour, University Department of Clinical Neurology, Radcliffe Infirmary, Oxford, U.K.
Neuropsychologia. 1994 Apr;32(4):449-64. doi: 10.1016/0028-3932(94)90090-6.
Seventeen patients with left visuospatial neglect caused by cerebral infarction undertook the six subtests of the Behavioural Inattention Test (BIT) as soon as possible following their neurological event. The group mean results on line, letter and star cancellation tasks revealed a linear decrement in performance from right to left on the displays. However, subsequent analysis of patients' cancellations revealed that this finding was not representative of individual performance. Many patients in fact made both marked left- and right-sided omissions on the three cancellation tasks. This was not merely a transitory phenomenon because it remained present at weekly follow-up intervals. Patients' performance on a laterally extended version of the star cancellation task was also investigated. These findings strongly suggest that patients with visuospatial neglect can initially present with a diverse range of performance deficit. Many patients, in particular those with the lowest BIT scores, showed a consistent pattern in the results on letter and star cancellation, providing evidence that their inattention consistently included a considerable section of right-sided (including the extreme right of displays) as well as left-sided space.
17名因脑梗死导致左侧视觉空间忽视的患者在神经事件发生后尽快进行了行为疏忽测试（BIT）的六项子测试。在线条、字母和星形删除任务上的组平均结果显示，在显示器上从右到左的表现呈线性下降。然而，随后对患者删除情况的分析表明，这一发现并不能代表个体表现。事实上，许多患者在三项删除任务中都在左侧和右侧出现了明显的遗漏。这不仅仅是一个暂时现象，因为在每周的随访间隔中都依然存在。还对患者在星形删除任务的横向扩展版本上的表现进行了研究。这些发现强烈表明，视觉空间忽视患者最初可能会表现出各种各样的表现缺陷。许多患者，尤其是那些BIT分数最低的患者，在字母和星形删除结果中表现出一致的模式，这证明他们的疏忽始终包括相当一部分右侧（包括显示器的最右侧）以及左侧空间。
