Out of touch? Visual load induces inattentional numbness.
Out of touch? Visual load induces inattentional numbness.
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DOI：
10.1037/xhp0000218
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发表时间：
2016-06
期刊：
影响因子：
--
通讯作者：
Dalton P
中科院分区：
文献类型：
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作者：
Murphy S;Dalton P
现在众所周知，注意力的缺乏会使人们对视觉和听觉刺激都没有意识（例如，）。然而，在触觉领域内类似效果的可能性得到的研究要少得多。在这里，我们介绍了一个新的触觉注意力不集中的范例，并使用它来测试触觉意识是否依赖于感知负荷的水平，在一个并发的视觉任务。参与者进行了视觉搜索任务，无论是低或高的感知负荷，以及响应的存在或不存在的短暂振动同时交付给左手或右手（50%的试验）。在高（与低）视觉感知负荷下，对明显可见的触觉刺激的检测灵敏度降低。这些发现首次有力地证明了“无意麻木”，同时也证明了这种现象可以由并发的视觉感知负荷引起。
It is now well known that the absence of attention can leave people unaware of both visual and auditory stimuli (e.g.,). However, the possibility of similar effects within the tactile domain has received much less research. Here, we introduce a new tactile inattention paradigm and use it to test whether tactile awareness depends on the level of perceptual load in a concurrent visual task. Participants performed a visual search task of either low or high perceptual load, as well as responding to the presence or absence of a brief vibration delivered simultaneously to either the left or the right hand (50% of trials). Detection sensitivity to the clearly noticeable tactile stimulus was reduced under high (vs. low) visual perceptual load. These findings provide the first robust demonstration of “inattentional numbness,” as well as demonstrating that this phenomenon can be induced by concurrent visual perceptual load.