Effect of a Body Part Action on Body Perception of the Other Inactive Body Part
Effect of a Body Part Action on Body Perception of the Other Inactive Body Part
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DOI：
10.1109/tcds.2022.3210659
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发表时间：
2023-09-01
影响因子：
5
通讯作者：
Kanayama，Noriaki
中科院分区：
文献类型：
--
作者：
Hara，Masayuki;Sugata，Hisato;Kanayama，Noriaki
橡胶手错觉（RHI）是一种错觉体验，当可见的假手和不可见的真手同时受到刺激时，人们会感觉假橡胶手就像自己的手一样。虽然有几项研究使用RHI范式提出了行动对身体所有权的贡献，但身体所有权和代理之间的关系尚未完全揭示。为了更好地理解这种关系，本研究调查了由身体部位动作引起的身体所有权在身体部位之间的转移。使用涉及虚拟现实的RHI范式，我们测试了优势手（活动手）的简单手指动作是否可以诱导非优势手（不活动手）对应的虚拟手的体现。我们分别通过主观问卷、跨模一致性效应测量和皮肤温度测量来评估实验过程中的幻觉体验、感知变化和生理变化。结果表明，手指的动作诱导了两个虚拟手的体现，导致非活动手的代理显著增加。这表明，由活跃的身体部位引起的幻觉体验有助于增加代理以及身体所有权，而不是其他不活跃的身体部位的虚拟身体。
The rubber hand illusion (RHI) is an illusory experience in which a fake rubber hand is felt as if it were one’s own hand when the visible fake and invisible real hands are stimulated synchronously. Although several studies have suggested contributions of action to body ownership using the RHI paradigm, the relationship between body ownership and agency has not yet been fully revealed. To better understand this relationship, the present study investigated the transfer of body ownership between body parts induced by a body part action. Using an RHI paradigm involving virtual reality, we tested whether a simple finger action of the dominant (active) hand can induce the embodiment of a virtual hand corresponding to the nondominant (inactive) hand. We evaluated the illusory experience, perceptual changes, and physiological changes during the experiment with a subjective questionnaire, crossmodal congruency effect measurement, and skin temperature measurement, respectively. The results demonstrated that the finger action induced the embodiment of both virtual hands, causing a significant increase in agency of the inactive hand. This suggests that the illusory experience induced by an active body part contributes to an increase in agency as well as body ownership over the virtual body of the other inactive body part.