Itatani Reiya, Senel Gizem, Topcu A Sencer, Slater Mel
Event Lab, Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain; Department of Computer Science, Universitat Polytècnica de Catalunya, Barcelona, Spain.
Event Lab, Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain; Institute of Neurosciences, University of Barcelona, Barcelona, Spain.
Conscious Cogn. 2025 Aug;133:103903. doi: 10.1016/j.concog.2025.103903. Epub 2025 Jul 18.
Illusory body ownership, the sense that a life-sized virtual body seen from first person perspective (1PP) in virtual reality (VR), is your body, is a well-established result. Previous work has demonstrated that illusory body ownership also results in vicarious agency over actions of the virtual body (VB). Moreover, how those actions are carried out influences later real life behaviour. In our study participants entered a VR depicting a dressing room before a concert performance, embodied from 1PP as the lead singer of a famous historical rock group. Their VB either moved synchronously with their own movements (n = 20), or asynchronously (n = 20). Those in the Synchronous condition had greater body ownership over the VB. Moreover, in a later appearance on stage in front of a virtual audience, those in the Synchronous condition had greater vicarious agency with respect to their VB, were more likely to adopt the guitar playing posture of the VB and carry out greater movements than those in the Asynchronous group. Hence body ownership in the context of 1PP over the VB with synchrony was associated with vicarious agency and also behaviour concomitant with the concert situation. These findings highlight the powerful impact of embodied experiences on agency and action.
虚幻的身体所有权，即从虚拟现实（VR）中的第一人称视角（1PP）看到的与真人大小相同的虚拟身体是自己身体的感觉，是一个已被充分证实的结果。先前的研究表明，虚幻的身体所有权还会导致对虚拟身体（VB）动作的代理体验。此外，这些动作的执行方式会影响后续的现实生活行为。在我们的研究中，参与者进入一个描绘音乐会表演前更衣室的VR场景，以第一人称视角化身为一个著名历史摇滚乐队的主唱。他们的虚拟身体要么与自己的动作同步移动（n = 20），要么异步移动（n = 20）。处于同步条件下的参与者对虚拟身体有更强的身体所有权。此外，在后来在虚拟观众面前登台表演时，处于同步条件下的参与者对其虚拟身体有更强的代理体验，比异步组的参与者更有可能采用虚拟身体的吉他弹奏姿势并做出更大的动作。因此，在第一人称视角下与虚拟身体同步时的身体所有权与代理体验以及与音乐会情境相关的行为有关。这些发现突出了具身体验对代理和行动的强大影响。
