Inattentional numbness and the influence of task difficulty
Inattentional numbness and the influence of task difficulty
复制标题
DOI：
10.1016/j.cognition.2018.05.001
复制
发表时间：
2018-09-01
期刊：
影响因子：
3.4
通讯作者：
Dalton, Polly
中科院分区：
文献类型：
--
作者：
Murphy, Sandra;Dalton, Polly
研究表明，当注意力集中在其他地方时，特别是当观察者正在从事一项复杂的任务时，可能会错过明显可察觉的刺激。尽管这种现象已经在视觉和听觉中得到证实，但人们对触觉中类似现象的可能性知之甚少。在两个实验中，我们调查了对意外触觉事件的意识与并发触觉任务难度的函数关系。参与者用一只手接受一系列触觉刺激，并执行简单或困难的计数任务。在最后的试验中，同时向无人看管的手提供额外的触觉刺激。回顾性报告显示，更多处于困难（相对于简单）条件的参与者仍然没有意识到这种意想不到的刺激，尽管在全神贯注的条件下可以清楚地检测到这种刺激。这些实验快速证明了由并发触觉任务难度调节的不注意麻木现象。
Research suggests that clearly detectable stimuli can be missed when attention is focused elsewhere, particularly when the observer is engaged in a complex task. Although this phenomenon has been demonstrated in vision and audition, much less is known about the possibility of a similar phenomenon within touch. Across two experiments, we investigated reported awareness of an unexpected tactile event as a function of the difficulty of a concurrent tactile task. Participants were presented with sequences of tactile stimuli to one hand and performed either an easy or a difficult counting task. On the final trial, an additional tactile stimulus was concurrently presented to the unattended hand. Retrospective reports revealed that more participants in the difficult (vs. easy) condition remained unaware of this unexpected stimulus, even though it was clearly detectable under full attention conditions. These experiments are the fast demonstrating the phenomenon of inattentional numbness modulated by concurrent tactile task difficulty.