Interaction between interoception and bodily self experience

对自己身体的感知是日常生活的一个基本特征，依赖于对各种感官品质的同时处理。潜在过程的干扰导致类似解离的体验，甚至可以在健康的参与者中诱发。越来越多的证据表明，内感受信号对将自己的身体视为自我巩固的位置做出了至关重要的贡献。然而，关于身体自我意识和内感受之间相互作用的实验数据缺失。拟议中的研究旨在弥合这一分歧。在三个实验中，通过实施a）内感受意识任务和B）分离体验的实验诱导来测试内感受对身体自我意识的影响，反之亦然。在第三个实验c）中，在完成内感受意识任务后，使用功能性磁共振成像评估自我心理旋转的神经相关性，重点关注高度整合的大脑区域（如颞顶叶交界处和颞叶）的活动差异。这些结果可能会加强我们对基本感知和与自身身体相关的高度认知感知之间复杂相互作用的认识，并可能有助于理解某些精神疾病中的解离性身体体验。

The perception of being located within the own body is an essential feature of everyday life and relies on the simultaneous processing of a variety of sensory qualities. Disturbances in the underlying processes result in dissociation-like experiences, which can even be induced in healthy participants. There is growing evidence suggesting that interoceptive signals critically contribute to the perception of the own body as the location of entrenchment of the self. However, experimental data on the interaction between bodily self-awareness and interoception is missing. The proposed study aims at bridging this gab. In three experiments, the influence of interoception on bodily self-awareness and vice versa is tested by the implementation of a) an interoception awareness task, and b) the experimental induction of dissociative experiences. In a third experiment c), after an interoception awareness task, the neural correlates of mental rotation of the self are assessed using functional magnetic resonance imaging, focusing on activity differences in highly integrative brain areas such as the temporo-parietal junction and the insula. The results might strength our knowledge about the complex interactions between basic perception and highly cognitive percepts related to the own body and might help to understand dissociative body experiences in certain mental disorders.