Visual neglect can be object-based or scene-based depending on task representation
Visual neglect can be object-based or scene-based depending on task representation
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DOI：
10.1016/s0010-9452(08)70119-9
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发表时间：
2004-04-01
期刊：
影响因子：
3.6
通讯作者：
Gore, CL
中科院分区：
文献类型：
--
作者：
Baylis, GC;Baylis, LL;Gore, CL
三名视觉忽视的患者进行了测试，他们的能力，以检测目标字母在同病灶和contralesional的位置上的显示器上，并在不同的位置在大的形状上的显示器。当患者被要求在整个监视器内检测目标时，他们对所有的对侧半野都表现出忽视。相比之下，当他们被要求检测特定物体中的目标时，他们表现出基于物体的忽视。在这两种情况下，显示器、目标和响应是相同的，唯一的区别是任务所代表的空间。这些结果表明，视觉忽视的参考框架可能会改变任务指令改变结构化的视觉场景是如何表示的，与忽视适用于这个代表空间的contralesional侧。
Three patients with visual neglect were tested on their ability to detect target letters at ipsilesional and contralesional locations on a monitor, and at different locations within large shapes on the monitor. When patients were asked to detect targets within the entire monitor, they showed neglect for all the contralesional hemifield. In contrast when they were asked to detect targets within a particular object, they showed object-based neglect. In these two conditions the displays, the targets and the response were identical, with the only difference being the space that is represented for the task. These results show that the reference frame of visual neglect may be altered by task-instructions changing how a structured visual scene is represented, with neglect applying to the contralesional side of this represented space.