Auvray Malika, Gallace Alberto, Hartcher-O'Brien Jess, Tan Hong Z, Spence Charles
Department of Experimental Psychology, Oxford University, Oxford, UK.
Brain Res. 2008 Jun 5;1213:111-9. doi: 10.1016/j.brainres.2008.03.015. Epub 2008 Mar 20.
Recent studies of change detection have revealed that people are surprisingly poor at detecting changes between two consecutively-presented scenes, when they are separated by a distractor that masks the transients typically associated with change. This failure, known as 'change blindness', has been reported within vision, audition, and touch. In the three experiments reported here, we investigated people's ability to detect the change between two patterns of tactile stimuli presented to their fingertips. The two to-be-compared patterns were presented either consecutively, separated by an empty interval or else by a tactile, visual, or auditory mask. Participants' performance was impaired when an empty interval was inserted between the two consecutively-presented patterns as compared with the consecutive stimulus presentation. Participants' performance was further impaired not only when a tactile mask was introduced between the two to-be-compared displays, but also when a visual mask was used instead. Interestingly, however, the addition of an auditory mask to an empty interval did not have any effect on participants' performance. These results are discussed in relation to the multisensory/amodal nature of spatial attention.
近期关于变化检测的研究表明，当两个连续呈现的场景被一个干扰物隔开时，人们在检测它们之间的变化方面表现得出奇地差，这个干扰物会掩盖通常与变化相关的瞬变信息。这种现象被称为“变化盲视”，已在视觉、听觉和触觉领域被报道。在本文所报告的三个实验中，我们研究了人们检测呈现于指尖的两种触觉刺激模式之间变化的能力。两种待比较的模式要么连续呈现，中间隔着一个空的间隔，要么被一个触觉、视觉或听觉掩蔽物隔开。与连续呈现刺激相比，当在两个连续呈现的模式之间插入一个空的间隔时，参与者的表现会受损。不仅当在两个待比较的显示之间引入一个触觉掩蔽物时参与者的表现会进一步受损，而且当使用视觉掩蔽物时也是如此。然而，有趣的是，在空的间隔中添加一个听觉掩蔽物对参与者的表现没有任何影响。我们结合空间注意力的多感官/非模态性质对这些结果进行了讨论。
