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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. © 2022. The Author(s).


Mikoto Ono, Nobuyuki Hirose, Shuji Mori. Tactile information affects alternating visual percepts during binocular rivalry using naturalistic objects. Cognitive research: principles and implications. 2022 May 11;7(1):40

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PMID: 35543826

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