Motion aftereffects transfer between touch and vision.
Motion aftereffects transfer between touch and vision.
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DOI：
10.1016/j.cub.2009.03.035
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发表时间：
2009-05-12
期刊：
影响因子：
--
通讯作者：
Moore CI
中科院分区：
文献类型：
--
作者：
Konkle T;Wang Q;Hayward V;Moore CI
目前关于多感觉运动整合的观点假设了不同的基底，其中视觉运动在感知上主导触觉运动。然而，最近的神经影像学发现表明触觉刺激强烈激活视觉运动处理区域，这意味着潜在的双向关系。为了检验视觉和触觉运动加工之间的关系，我们考察了运动后效的转移。在众所周知的视觉运动后效中，适应一个方向的视觉运动导致随后呈现的静止刺激被认为是向相反方向移动的。运动后效在触觉领域的存在是有争议的，尽管鲁棒的触觉运动后效最近被证明。通过使用运动适应范式，我们发现反复暴露在给定方向的视觉运动中会产生触觉运动后效，即手指垫在对手方向运动的错觉。我们还观察到，反复接触触觉运动会引起视觉运动后效应，使对相光栅的感知方向产生偏倚。这些从视觉到触觉和从触觉到视觉的跨模态效应提供了强有力的行为证据，表明视觉和触觉运动的处理依赖于动态影响特定模态感知的共享表征。
Current views on multisensory motion integration assume separate substrates where visual motion perceptually dominates tactile motion. However, recent neuroimaging findings demonstrate strong activation of visual motion processing areas by tactile stimuli, implying a potentially bidirectional relationship. To test the relationship between visual and tactile motion processing, we examined the transfer of motion aftereffects. In the well-known visual motion aftereffect, adapting to visual motion in one direction causes a subsequently presented stationary stimulus to be perceived as moving in the opposite direction. The existence of motion aftereffects in the tactile domain was debated, though robust tactile motion aftereffects have recently been demonstrated. By using a motion adaptation paradigm, we found that repeated exposure to visual motion in a given direction produced a tactile motion aftereffect, the illusion of motion in the opponent direction across the finger pad. We also observed that repeated exposure to tactile motion induces a visual motion aftereffect, biasing the perceived direction of counterphase gratings. These crossmodal aftereffects, operating both from vision to touch and from touch to vision, present strong behavioral evidence that the processing of visual and tactile motion rely on shared representations that dynamically impact modality-specific perception.
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