Interaction between interoception and bodily self experience

身处自己身体内的感觉是日常生活的一个基本特征，它依赖于各种感官品质的同时处理。潜在过程中的干扰会导致类似解离的体验，这甚至可以在健康的参与者中诱导。越来越多的证据表明，内感信号关键地有助于将自己的身体视为自我根深蒂固的位置。然而，关于身体自我意识和内感之间相互作用的实验数据却是缺失的。拟议的研究旨在弥合这一争执。在三个实验中，通过实施a)内感意识任务和b)分离经验的实验性诱导来检验内感对身体自我意识的影响，反之亦然。在第三个实验c)中，在完成内感感知任务后，使用功能磁共振成像来评估自我心理旋转的神经关联，重点关注高度整合的大脑区域，如临时顶叶交界处和脑岛的活动差异。这一结果可能会加强我们对与自身身体相关的基本知觉和高度认知知觉之间复杂相互作用的了解，并可能有助于理解某些精神障碍的分离性身体体验。

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.