The temporoparietal junction (TPJ), along with the anterior insula (AI) and the extrastriate body area (EBA), play a major part in embodiment and self-awareness. However, these connections also appear to be frequently engaged in arousal and attentional processing of external events. Considering that these networks may focus attention both toward and away from the self, we set to investigate how they contribute to the perception of spontaneous sensations (SPS), a common phenomenon related to self-awareness and mediated by both interoceptive and attentional processes. In Experiment 1, resting-state EEG was recorded, as well as arousal reported via a questionnaire, followed by a SPS task. Functional TPJ-AI and TPJ-EBA connectivity were computed using eLORETA. Spatial correlational analyses showed that less frequent SPS coincided with greater TPJ-AI and TPJ-EBA functional connectivity, especially in the theta and alpha frequency bands. High self-reported arousal predicted low intensity and low confidence in the location of SPS. Resting-state skin conductance level (SCL) was recorded in Experiment 2, followed by the SPS task. Less frequent SPS coincided with greater SCL. Findings are interpreted in terms of attention and self-related processes, and a discussion of the TPJ participation in self-awareness through SPS is presented.

颞顶交界处 (TPJ) 以及前脑岛 (AI) 和纹外体区 (EBA) 在体现和自我意识方面发挥着重要作用。然而，这些联系似乎也经常参与外部事件的唤醒和注意力处理。考虑到这些网络可能会将注意力集中在自我上和远离自我，我们开始研究它们如何促进自发感觉 (SPS) 的感知，这是一种与自我意识相关的常见现象，由内感受和注意过程介导。在实验 1 中，记录静息状态的 EEG，以及通过问卷报告的唤醒，然后是 SPS 任务。使用 eLORETA 计算功能性 TPJ-AI 和 TPJ-EBA 连接。空间相关性分析表明，频率较低的 SPS 与较大的 TPJ-AI 和 TPJ-EBA 功能连接一致，尤其是在 theta 和 alpha 频段。自我报告的高唤醒预测了对 SPS 位置的低强度和低置信度。在实验 2 中记录了静息状态皮肤电导水平 (SCL)，然后是 SPS 任务。频率较低的 SPS 与较大的 SCL 相吻合。结果根据注意力和自我相关过程进行解释，并讨论了 TPJ 通过 SPS 参与自我意识。频率较低的 SPS 与较大的 SCL 相吻合。结果根据注意力和自我相关过程进行解释，并讨论了 TPJ 通过 SPS 参与自我意识。频率较低的 SPS 与较大的 SCL 相吻合。结果根据注意力和自我相关过程进行解释，并讨论了 TPJ 通过 SPS 参与自我意识。