Department of Informatics, Graduate school of Information Science and Electrical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka City, Fukuoka, 819-0395, Japan.
Cogn Res Princ Implic. 2022 May 11;7(1):40. doi: 10.1186/s41235-022-00390-w.
Past studies have provided evidence that the effects of tactile stimulation on binocular rivalry are mediated by primitive features (orientation and spatial frequency) common in vision and touch. In this study, we examined whether such effects on binocular rivalry can be obtained through the roughness of naturalistic objects. In three experiments, the total dominant time of visual percepts of two objects was measured under binocular rivalry when participants touched one of the objects.
In Experiment 1, the total dominant time for the image of artificial turf and bathmat was prolonged by congruent tactile stimulation and shortened by incongruent tactile stimulation. In Experiment 2, we used the same stimuli but rotated their visual images in opposite directions. The dominant time for either image was prolonged by congruent tactile stimulation. In Experiment 3, we used different types of stimuli, smooth marble and rough fabric, and noted significant effects of the congruent and incongruent tactile stimulation on the dominant time of visual percepts.
These three experiments demonstrated that visuo-tactile interaction on binocular rivalry can be mediated by roughness.
过去的研究已经证明，触觉刺激对双眼竞争的影响是由视觉和触觉中常见的原始特征（方向和空间频率）介导的。在这项研究中，我们检验了通过自然物体的粗糙度是否可以获得对双眼竞争的这种影响。在三个实验中，当参与者触摸其中一个物体时，测量了两个物体的视觉知觉的总优势时间。
在实验 1 中，人工草皮和浴室垫的图像的总优势时间通过一致的触觉刺激延长，通过不一致的触觉刺激缩短。在实验 2 中，我们使用了相同的刺激，但将它们的视觉图像旋转到相反的方向。与触觉刺激一致的图像的优势时间延长。在实验 3 中，我们使用了不同类型的刺激，光滑的大理石和粗糙的织物，并注意到触觉刺激对视觉知觉的优势时间有显著影响。
这三个实验表明，双眼竞争中的视触觉相互作用可以通过粗糙度来介导。
