Halligan P W, Marshall J C, Wade D T
Rivermead Rehabilitation Centre, Oxford, United Kingdom.
J Neurol Neurosurg Psychiatry. 1990 Jun;53(6):487-91. doi: 10.1136/jnnp.53.6.487.
A significant association between visual field deficits (VFD) and visuo-spatial neglect is well established, although cases of double-dissociation between the two conditions are not uncommon. It has been argued that VFD typically exacerbates the behavioural manifestations of neglect. We examined a series of 51 patients with unilateral right-hemisphere stroke for the presence of visual field deficit and visuo-spatial neglect. Patients were assigned to the neglect group (N+) or the non-neglect group (N-) on the basis of their aggregate scores on the recently standardised Behavioural Inattention Test (BIT). The association between neglect and VFD was confirmed. Four groups of eight patients (N+, VFD+; N+, VFD-; N-, VFD+; N-, VFD-) were then selected from the initial sample so that they were matched for age, IQ, and days post onset of stroke. Within the neglect groups, the severity of neglect did not differ significantly between those patients with and without VFD; within the non-neglect groups, scores on subtests of the BIT likewise did not differ (with the sole exception of Letter Cancellation) between the VFD+ and the VFD- subgroups. It was concluded that visual field deficits do not exacerbate neglect, and that poor functional recovery in many patients with VFDs is due to the association of sensory loss with the underlying causal factor of neglect.
视野缺损（VFD）与视觉空间忽视之间存在显著关联，这一点已得到充分证实，尽管在这两种情况之间出现双重解离的病例并不罕见。有人认为，视野缺损通常会加剧忽视的行为表现。我们对51例单侧右半球中风患者进行了检查，以确定是否存在视野缺损和视觉空间忽视。根据患者在最近标准化的行为疏忽测试（BIT）中的总分，将患者分为忽视组（N+）或非忽视组（N-）。忽视与视野缺损之间的关联得到了证实。然后从初始样本中选出四组，每组八名患者（N+，VFD+；N+，VFD-；N-，VFD+；N-，VFD-），使他们在年龄、智商和中风发病后的天数方面相匹配。在忽视组中，有视野缺损和无视野缺损的患者之间，忽视的严重程度没有显著差异；在非忽视组中，VFD+和VFD-亚组在BIT子测试中的得分同样没有差异（唯一的例外是字母取消测试）。研究得出结论，视野缺损不会加剧忽视，许多视野缺损患者功能恢复不佳是由于感觉丧失与忽视的潜在因果因素相关联。
