The full-body illusion (FBI) refers to the experience of perceiving a virtual avatar as one's own body. In virtual reality (VR) environments, inducing the FBI has been shown to modulate users' bodily experiences and behavior. Previous studies have demonstrated that embodying avatars with specific characteristics can influence users' actions, largely through the activation of implicit stereotypes. However, few studies have explicitly manipulated users' impressions of an avatar by introducing narrative context. The present study investigated how avatar narrativity, induced through contextual narratives, affects the FBI. Healthy participants embodied a powerful artificial lifeform avatar in VR after listening to either a positive narrative, in which the avatar used its abilities to protect others, or a negative narrative, in which it misused its power. Participants' impressions of the avatar and indices of bodily self-consciousness were subsequently assessed. The results showed that positive narratives significantly enhanced the sense of agency (SoA), and that SoA was positively correlated with participants' perceived personal familiarity with the avatar. These findings suggest that the avatar narrativity can modulate embodiment in VR.

翻译：全身错觉（FBI）是指将虚拟化身感知为自己身体的体验。在虚拟现实（VR）环境中，诱导FBI已被证明可以调节用户的身体体验和行为。先前研究表明，具身化具有特定特征的化身能够影响用户的行为，这很大程度上是通过激活内隐刻板印象实现的。然而，很少有研究通过引入叙事背景来明确操控用户对化身的印象。本研究探讨了通过情境叙事诱导的化身叙事性如何影响FBI。健康参与者在聆听一段积极叙事（化身运用其能力保护他人）或消极叙事（化身滥用其能力）后，在VR中具身化一个强大的人工生命体化身。随后评估了参与者对化身的印象及身体自我意识的指标。结果显示，积极叙事显著增强了能动感（SoA），且SoA与参与者感知到的对化身的个人熟悉度呈正相关。这些发现表明，化身叙事性能够调节VR中的具身化体验。