Gaze-contingent stimulus removal leads to subsequent changes in overt attentional allocation
Gaze-contingent stimulus removal leads to subsequent changes in overt attentional allocation
复制标题
视线相关刺激的消除会导致明显注意力分配的后续变化
DOI：
10.1016/j.neuropsychologia.2019.107297
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发表时间：
2020
期刊：
影响因子：
2.6
通讯作者：
Schenk
中科院分区：
文献类型：
--
作者：
Ludwig;Schmid;Schenk
空间忽视是一种使人衰弱的神经系统疾病，其特征是对对侧空间的探索减少。我们开发了一种干预措施，在数百次试验的过程中，减少了搜索显示的一半范围内的眼球运动。本研究的目的是确定这种干预措施是否对健康参与者的注意力分散有影响，作为应用于患者的第一步。参与者执行了一项视觉搜索任务，在此任务中，只要参与者的眼球向搜索显示的一半移动，其中的刺激就会被移除。另一半的刺激不受眼球运动的影响。事实上，这导致在干预过程中受影响的一半人的注视度相对稳定地减少。在五个实验中，测量了干预前后不同空间注意力范式的表现。在两种视觉搜索范例（特征搜索和联合搜索）中，与未受影响的一半相比，受影响的一半的探索减少了。在具有外源线索的波斯纳任务中，发现了干预的部分效果。然而，复制这种效果的尝试并未成功。第五个实验表明，线平分范式中的性能并未受到干预的显着影响。总而言之，干预措施显示出影响健康参与者在公开注意力探索任务中的行为的潜力。
Spatial neglect is a debilitating neurological disorder marked by reduced exploration of contralesional space. We developed an intervention in which eye movements to and within one half of a search display were reduced over the course of several hundred trials. The aim of this study was to determine whether this intervention had an effect on the deployment of attention of healthy participants as a first step towards application in patients. The participants carried out a visual search task during which the stimuli in one half of the search display were removed whenever the participants made eye movements towards it. The stimuli in the other half were unaffected by eye movements. Indeed, this led to a steady relative decrease in fixations within the affected half over the course of the intervention. In five experiments, the performance in different spatial attention paradigms was measured before and after this intervention. In two visual search paradigms (feature and conjunction search), exploration of the affected half decreased compared to the unaffected half. In a Posner task with exogenous cues, a partial effect of the intervention was found. However, an attempt at replicating this effect was not successful. The fifth experiment showed that performance in a line bisection paradigm was not significantly influenced by the intervention. To conclude, the intervention showed the potential to influence the behavior of healthy participants in overt attentional exploration tasks.
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