Mirror-Brush Illusion: Creating Phantom Tactile Percepts on Intact Limbs
Mirror-Brush Illusion: Creating Phantom Tactile Percepts on Intact Limbs
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DOI：
10.1109/toh.2023.3279012
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发表时间：
2023-10-01
影响因子：
2.9
通讯作者：
Brown，Jeremy D.
中科院分区：
文献类型：
--
作者：
Singhala，Mohit;Brown，Jeremy D.
触觉错觉为我们如何将身体与环境分开建模提供了独特的见解。像橡胶手错觉和镜盒错觉这样流行的错觉已经证明，我们可以调整肢体的内部表征来应对视觉-触觉冲突。在这份手稿中，我们通过调查在多大程度上扩展了这方面的知识，如果有的话，我们也增加了我们对环境的外部表征及其对我们身体的作用，以应对视觉-触觉冲突。利用镜子和机器人brushstroking平台，我们创建了一个新的虚幻的范例，提出了一个视觉-触觉的冲突，使用一致和不一致的触觉刺激施加到参与者的手指。总的来说，我们观察到，当看到与实际触觉刺激不一致的视觉刺激时，参与者在视觉闭塞的手指上感知到一种虚幻的触觉。我们还发现了冲突消除后幻觉的残余影响。这些发现强调了我们对保持身体内部连贯表征的需求如何延伸到我们对环境的模型。
Haptic illusions provide unique insights into how we model our bodies separate from our environment. Popular illusions like the rubber-hand illusion and mirror-box illusion have demonstrated that we can adapt the internal representations of our limbs in response to visuo-haptic conflicts. In this manuscript, we extend this knowledge by investigating to what extent, if any, we also augment our external representations of the environment and its action on our bodies in response to visuo-haptic conflicts. Utilizing a mirror and a robotic brushstroking platform, we create a novel illusory paradigm that presents a visuo-haptic conflict using congruent and incongruent tactile stimuli applied to participants' fingers. Overall, we observed that participants perceived an illusory tactile sensation on their visually occluded finger when seeing a visual stimulus that was inconsistent with the actual tactile stimulus provided. We also found residual effects of the illusion after the conflict was removed. These findings highlight how our need to maintain a coherent internal representation of our body extends to our model of our environment.