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The generality of parietal involvement in visual attention.

机译:顶叶参与视觉注意的普遍性。

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Functional magnetic resonance imaging (fMRI) was used to determine whether different kinds of visual attention rely on a common neural substrate. Within one session, subjects performed three different attention experiments (each comparing an attentionally demanding task with an easier task using identical stimuli): (1) peripheral shifting, (2) object matching, and (3) a nonspatial conjunction task. Two areas were activated in all three experiments: one at the junction of intraparietal and transverse occipital sulci (IPTO), and another in the anterior intraparietal sulcus (AIPS). These regions are not simply involved in any effortful task, because they were not activated in a fourth experiment comparing a difficult language task with an easier control task. Thus, activity in IPTO and AIPS generalizes across a wide variety of attention-requiring tasks, supporting the existence of a common neural substrate underlying multiple modes of visual selection.
机译:功能磁共振成像(fMRI)用于确定不同种类的视觉注意力是否依赖于共同的神经基质。在一个会话中,受试者进行了三个不同的注意力实验(每个实验都将注意力集中的任务与使用相同刺激的较简单任务进行比较):( 1)外围移位,(2)对象匹配和(3)非空间连合任务。在所有三个实验中,有两个区域被激活:一个位于顶内和横枕沟(IPTO)的交界处,另一个在顶前沟(AIPS)中。这些区域不会简单地参与任何繁重的任务,因为它们在第四个实验中没有被激活,该实验比较了困难的语言任务和较容易的控制任务。因此,IPTO和AIPS中的活动可以概括为各种各样的注意力需求任务,从而支持存在着多种视觉选择模式的共同神经基质。

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