The concept of embodiment has been used in multiple scenarios, but in cognitive neuroscience it normally refers to the comprehension of the role of one's own body in the cognition of everyday situations and the processes involved in that perception. Multisensory research is gradually embracing the concept of embodiment, but the focus has mostly been concentrated upon audiovisual integration. In two experiments, we evaluated how the likelihood of a perceived stimulus to be embodied modulates visuotactile interaction in a Simultaneity Judgement task. Experiment 1 compared the perception of two visual stimuli with and without biological attributes (hands and geometrical shapes) moving towards each other, while tactile stimuli were provided on the palm of the participants' hand. Participants judged whether the meeting point of two periodically-moving visual stimuli was synchronous with the tactile stimulation in their own hands. Results showed that in the hand condition, the Point of Subjective Simultaneity (PSS) was significantly more distant to real synchrony (60 ms after the Stimulus Onset Asynchrony, SOA) than in the geometrical shape condition (45 ms after SOA). In experiment 2, we further explored the impact of biological attributes by comparing performance on two visual biological stimuli (hands and ears), that also vary in their motor and visuotactile properties. Results showed that the PSS was equally distant to real synchrony in both the hands and ears conditions. Overall, findings suggest that embodied visual biological stimuli may modulate visual and tactile multisensory interaction in simultaneity judgements.

中文翻译：

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同步性的具体化和多感官知觉：生物特征调节同时判断中的视觉和触觉多感官交互。


具身化的概念已用于多种场景，但在认知神经科学中，它通常指的是对自己的身体在日常情境认知中的作用以及该感知所涉及的过程的理解。多感官研究逐渐接受体现的概念，但焦点主要集中在视听整合上。在两个实验中，我们评估了感知刺激具体化的可能性如何调节同时性判断任务中的视觉触觉交互。实验 1 比较了两种视觉刺激的感知，其中有和没有生物属性（手和几何形状）相互移动，而触觉刺激是在参与者的手掌上提供的。参与者判断两个周期性移动的视觉刺激的交汇点是否与自己手中的触觉刺激同步。结果表明，在手部条件下，主观同时性点 (PSS) 与真实同步（刺激开始异步 (SOA) 后 60 毫秒）的距离明显大于几何形状条件下（SOA 后 45 毫秒）的距离。在实验 2 中，我们通过比较两种视觉生物刺激（手和耳朵）的表现，进一步探讨了生物属性的影响，这两种刺激的运动和视觉触觉特性也有所不同。结果表明，PSS 在手和耳朵条件下与真实同步的距离相同。总体而言，研究结果表明，具体视觉生物刺激可能会调节同时判断中的视觉和触觉多感官相互作用。