Tactile force perception depends on the visual speed of the collision object.
Tactile force perception depends on the visual speed of the collision object.
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DOI：
10.1167/9.11.19
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发表时间：
2009-10
影响因子：
1.8
通讯作者：
Kan Arai;K. Okajima
中科院分区：
文献类型：
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作者：
Kan Arai;K. Okajima
以往关于视觉和触觉交互作用的研究大多采用静态视觉和连续触觉刺激，并发现存在两种多通道交互效应：平均效应和对比度效应。平均化效应被用来解释几种刺激的交互作用，而对比度效应只与尺寸-重量错觉有关(A.Charpentier，1891)。在这里，我们描述了一种新的视觉触觉交互，使用可以用对比度效应解释的视觉运动信息。我们发现，虚拟碰撞事件的视觉运动信息显著地改变了手掌上的触觉力量感知(MTFP)的大小。我们的碰撞模拟器独立于相应的触觉刺激产生视觉刺激。结果表明，在实际接触力保持不变的情况下，视觉速度影响了MTFP：较高的视觉碰撞前和碰撞后速度导致较低的触觉知觉。最后，我们提出了MTFP的定量模型，其中MTFP被表示为视速差的函数，这表明人类大脑中触觉知觉的增益通过MTFP的调制而改变。
Previous research on the interaction between vision and touch has employed static visual and continuous tactile stimuli, and has shown that two kinds of multimodal interaction effect exist: the averaging effect and the contrast effect. The averaging effect has been used to explain several kinds of stimuli interaction while the contrast effect is associated only with the size-weight illusion (A. Charpentier, 1891). Here, we describe a novel visuotactile interaction using visual motion information that can be explained with the contrast effect. We show that the magnitude of tactile force perception (MTFP) from an impact on the palm is significantly modified by the visual motion information of a virtual collision event. Our collision simulator generates visual stimuli independently from the corresponding tactile stimuli. The results show that visual speed modified MTFP even though the actual contact force remained constant: higher visual pre- and post-collision speeds induced lower tactile force perception. Finally, we propose a quantitative model of MTFP in which MTFP is expressed as a function of the visual velocity difference, suggesting that the gain of the tactile perception in the human brain is altered via MTFP modulation.