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首页> 外文期刊>Journal of vision >Egocentric and allocentric neglect after right and left hemisphere lesions in a large scale neglect study of acute stroke patients: Prevalence and recovery.
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Egocentric and allocentric neglect after right and left hemisphere lesions in a large scale neglect study of acute stroke patients: Prevalence and recovery.

机译：在急性脑卒中患者的大规模忽视研究中，左右半球病变后以自我为中心和同心为中心的忽视：患病率和恢复情况。

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Left neglect is traditionally reported to be much more common and more severe than right neglect. Often this is taken as support for a right hemispheric specialisation of visuo-spatial attention. Here, we explore the incidence and severity of ego-and allocentric neglect in a consecutive acute stroke sample (N=298) and compare left versus right neglect recovery 6 months post stroke (N=121). Patients completed the hearts cancellation task from the Oxford Cognitive Screen on average after 6 days and again 6 months post-stroke. The results demonstrated that egocentric and allocentric neglect are separable subtypes with egocentric and allocentric neglect occurring in isolation in 46 and 27% of the acute neglect patients, respectively. In addition, we found that in participants with only allocentric neglect there was no egocentric spatial laterality to the false positive errors made. Though left egocentric neglect was more prevalent (67%) in right hemisphere patients, the severity was not significantly different from that in left hemisphere cases (in terms of the absolute asymmetry scores). In addition, there was an equal incidence of left and right allocentric neglect (51% vs 49%). However, in terms of recovery, at 6 months post stroke, right neglect was much more likely to recover (only 2 patients still demonstrated right neglect at follow up). There were no differences in recovery rates for ego- vs allocentric neglect. The lack of an effect of egocentric spatial bias to allocentric errors provides strong evidence that these disorders are independent. In addition, the greater likelihood of left neglect continuing at 6 months, despite it having the same severity for left and right hemisphere patients, is consistent with right hemisphere patients (and patients with chronic neglect) having disorders additional to a bias in spatial orienting.
机译：据报道，传统上左忽视比右忽视更为普遍和严重。通常，这被视为对视觉空间关注的正确半球专业化的支持。在这里，我们探讨了连续急性中风样本（N = 298）中自我和同心圆忽视的发生率和严重程度，并比较了卒中后6个月（N = 121）左右偏向的恢复情况。中风后6天和6个月后，患者平均通过牛津认知屏完成了消除心脏的任务。结果表明，以自我为中心和同心为中心的忽视是可分离的亚型，分别有46％和27％的急性忽视患者分别发生以自我为中心和同心为中心的忽视。此外，我们发现，在只具有同心圆忽略的参与者中，没有因假阳性错误而存在以自我为中心的空间偏向性。尽管在左半球患者中以左为中心的忽视更为普遍（67％），但其严重程度与左半球患者的严重程度并没有显着差异（就绝对不对称性评分而言）。此外，左，右同心轴被忽视的发生率均相等（51％对49％）。但是，就恢复而言，中风后6个月，右偏的可能性更大（只有2例患者在随访中仍然表现为右偏）。自我中心和异心中心忽略的恢复率没有差异。缺乏以自我为中心的空间偏见对同素性错误的影响，提供了强有力的证据证明这些疾病是独立的。此外，尽管左半球和右半球患者的严重程度相同，但在六个月内仍可能发生左忽视的可能性更大，这与右半球患者（以及患有慢性忽视的患者）在空间取向上存在偏见外还存在障碍。

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