Làdavas E, Umiltà C, Ziani P, Brogi A, Minarini M
Dipartimento di Psicologia, Università di Bologna, Italy.
Neuropsychologia. 1993 Aug;31(8):761-73. doi: 10.1016/0028-3932(93)90127-l.
Based on a test introduced by Tegnér and Levander, Brain 114, 1943-1951, 1991, right brain-damaged patients were assigned to a group with unilateral perceptual neglect and a group with directional motor neglect. Brain scans showed that all directional motor neglect patients had frontal lesions, whereas in perceptual neglect patients the frontal lobes were always spared. All patients were asked to execute two tasks, which were also administered to a control group. One task consisted in pointing to tokens symmetrically distributed on a display. The other task consisted in picking up the same tokens. The tasks were first executed with the aid of vision and then in a blindfolded condition. In the case of patients with perceptual neglect, performance on the left side was better in the pick-up task than in the pointing task and improved in the blindfolded condition. Neither patients with directional motor neglect nor control patients showed these effects. The results were explained in terms of the hyperattentional hypothesis of perceptual neglect, according to which, in this form of neglect, attention is captured by the objects that lie on the right side of space.
根据特格纳和莱万德于1991年在《大脑》第114卷第1943 - 1951页介绍的一项测试，右脑损伤患者被分为单侧感知忽视组和定向运动忽视组。脑部扫描显示，所有定向运动忽视患者都有额叶病变，而感知忽视患者的额叶总是未受损伤。所有患者都被要求执行两项任务，这两项任务也施测于一个对照组。一项任务是指向对称分布在显示屏上的代币。另一项任务是捡起同样的代币。这些任务首先在视觉辅助下执行，然后在蒙眼状态下执行。在感知忽视患者中，在捡起任务中左侧的表现比指向任务中更好，并且在蒙眼状态下有所改善。定向运动忽视患者和对照组患者均未表现出这些效应。这些结果根据感知忽视的过度关注假说进行了解释，根据该假说，在这种忽视形式中，注意力被位于空间右侧的物体所吸引。
