Rapport L J, Webster J S, Dutra R L
Wayne State University.
Neuropsychologia. 1994 May;32(5):517-25. doi: 10.1016/0028-3932(94)90141-4.
This study tested the alternative hypotheses of Weinberg et al. (J. clin. Psychol. 28, 361, 1976) and Robertson (Neuropsychologia 28, 217-222, 1990) regarding the nature of dysfunctions underlying impaired backward digit span among patients with unilateral neglect. Results support the Weinberg et al. hypothesis that visual imagery plays a primary role in performance of Digits Backward. The findings also indicate a unilateral component to the Digits Backward task. Both neglecting and non-neglecting patients with high digit span discrepancy (DD) evidenced attentional bias to right space and a specific impairment in rotating objects in left space. Results were not consistent with Robertson's hypothesis that high DD arises from a general attentional deficit. In fact, patients with low DD evidence greatest impairment on tests of attention.
本研究检验了温伯格等人（《临床心理学杂志》28卷，361页，1976年）以及罗伯逊（《神经心理学》28卷，217 - 222页，1990年）关于单侧忽视患者逆向数字广度受损背后功能障碍本质的替代假设。结果支持了温伯格等人的假设，即视觉表象在逆向数字任务表现中起主要作用。研究结果还表明逆向数字任务存在单侧成分。数字跨度差异（DD）高的忽视和非忽视患者均表现出对右侧空间的注意偏向以及在左侧空间旋转物体方面的特定损伤。结果与罗伯逊的假设不一致，该假设认为高DD源于一般注意力缺陷。事实上，DD低的患者在注意力测试中表现出最大损伤。
