Department of Human Movement Sciences, Vrije Universiteit Amsterdam, The Netherlands.
Motor Control Laboratory, Movement Control and Neuroplasticity Research Group, Biomedical Sciences Group, Department of Kinesiology, KU Leuven, Belgium.
Sci Rep. 2017 Mar 2;7:43868. doi: 10.1038/srep43868.
We can efficiently detect whether there is a rough object among a set of smooth objects using our sense of touch. We can also quickly determine the number of rough objects in our hand. In this study, we investigated whether the perceptual processing of rough and smooth objects is influenced if these objects are connected. In Experiment 1, participants were asked to identify whether there were exactly two rough target spheres among smooth distractor spheres, while we recorded their response times. The spheres were connected to form pairs: rough spheres were paired together and smooth spheres were paired together ('within pairs arrangement'), or a rough and a smooth sphere were connected ('between pairs arrangement'). Participants responded faster when the spheres in a pair were identical. In Experiment 2, we found that the advantage for within pairs arrangements was not driven by feature saliency. Overall our results show that haptic information is processed faster when targets were connected together compared to when targets were connected to distractors.
我们可以通过触觉高效地检测出一组光滑物体中是否存在粗糙物体，还可以迅速判断手中粗糙物体的数量。在这项研究中，我们探究了当这些物体相互连接时，人们对粗糙和光滑物体的感知处理是否会受到影响。在实验 1 中，我们要求参与者识别在光滑的干扰球中是否有两个精确的粗糙目标球，同时记录他们的反应时间。这些球相互连接形成了对：粗糙的球相互连接，光滑的球相互连接（“在对中排列”），或者一个粗糙的球和一个光滑的球连接在一起（“在对之间排列”）。当一对中的球体相同时，参与者的反应会更快。在实验 2 中，我们发现，在对中排列的优势不是由特征显著性驱动的。总的来说，我们的结果表明，与目标与干扰物相连相比，当目标相互连接时，触觉信息的处理速度更快。
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