This paper introduces the notion of affective extended reality (XR) to characterise XR systems that use biodata to enable understanding of emotions. The HCI literature contains many such systems, but they have not yet been mapped into a coherent whole. To address this, we conducted a scoping review of 82 papers that explore the nexus of biodata, emotions, and XR. We analyse the technologies used in these systems, the interaction techniques employed, and the methods used to evaluate their effectiveness. Through our analysis, we contribute a mapping of the current landscape of affective XR, revealing diversity in the goals for enabling emotion sharing. We demonstrate how HCI researchers have explored the design of the interaction flows in XR biofeedback systems, highlighting key design dimensions and challenges in understanding emotions. We discuss underused approaches for emotion sharing and highlight opportunities for future research on affective XR.

翻译：本文提出"情感扩展现实"概念，用以描述利用生物数据实现情感理解的XR系统。尽管人机交互领域已存在大量此类系统，但尚未形成完整体系图谱。为此，我们对82篇探讨生物数据、情感与XR交叉领域的研究论文进行了范围综述，系统分析了相关技术架构、交互范式及有效性评估方法。通过构建情感XR研究现状图谱，本研究揭示了情感共享目标体系的多样性特征，阐明了人机交互学者在XR生物反馈系统交互流程设计方面的探索路径，并提炼出情感理解的关键设计维度与核心挑战。最后，本文讨论了当前未被充分利用的情感共享方法，并指出情感XR领域未来研究的潜在方向。