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首页> 外文期刊>Neuropsychologia >Weight and see: Line bisection in neglect reliably measures the allocation of attention, but not the perception of length
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Weight and see: Line bisection in neglect reliably measures the allocation of attention, but not the perception of length

机译:重量和看:忽视的线路分配可靠地测量关注的分配,但不是长度的感知

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摘要

Line bisection has long been a routine test for unilateral neglect, along with a range of tests requiring cancellation, copying or drawing. However, several studies have reported that line bisection, as classically administered, correlates relatively poorly with the other tests of neglect, to the extent that some authors have questioned its status as a valid test of neglect. In this article, we re-examine this issue, employing a novel method for administering and analysing line bisection proposed by McIntosh et al. (2005). We report that the measure of attentional bias yielded by this new method (EWB) correlates significantly more highly with cancellation, copying and drawing measures than the classical line bisection error measure in a sample of 50 right-brain damaged patients. Furthermore when EWB was combined with a second measure that emerges from the new analysis (EWS), even higher correlations were obtained. A Principal Components Analysis found that EWB loaded highly on a major factor representing neglect asymmetry, while EWS loaded on a second factor which we propose may measure overall attentional investment. Finally, we found that tests of horizontal length and size perception were related poorly to other measures of neglect in our group. We conclude that this novel approach to interpreting line bisection behaviour provides a promising way forward for understanding the nature of neglect.
机译:线路二分长期以来一直是单侧疏忽的常规测试,以及需要取消,复制或绘图的一系列测试。然而,几项研究报告说,在荒谬的情况下,透学管理的线路分类与忽视的其他测试相对较差,在某些作者认为其身份作为忽视的有效考验的程度。在本文中,我们重新研究了这个问题,采用了一种新的方法来管理和分析McIntosh等人的线路二分。 (2005)。我们报告说,这种新方法(EWB)产生的注意力偏差衡量(EWB)产生的衡量显着与取消,复印和绘图措施相比,比右脑受损患者的样本中的古典线路二分误差措施更高。此外,当EWB与从新分析(EWS)出现的第二次措施相结合时,即使获得更高的相关性。主要成分分析发现,EWB高度负载高度,代表忽视不对称的主要因素,而我们提出的第二个因素的EWS可以衡量整体注意力投资。最后,我们发现水平长度和大小感知的测试与我们集团忽视的其他措施有关。我们得出结论,这种新颖的解释线路行为方法提供了一种有希望的前进方式,以了解忽视的性质。

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