Interoception refers to the processing of internal bodily stimuli, while body image refers to appearance-related perceptions, affect, and cognitions. Previous research has found that body image is associated with self-reported and behavioural indices of interoception. Here, we extended this research by examining associations between measures of positive (i.e., body appreciation, functionality appreciation) and negative body image (i.e., body shame, weight preoccupation) and two electrophysiological indices of interoceptive processing, namely the heartbeat evoked potential (HEP) and gastric-alpha phase-amplitude coupling (PAC), in a sample of 36 adults. Significant negative associations were identified between the indices of negative body image and the interoception variables. Specifically, more negative HEP amplitude and lower gastric-alpha PAC were both associated with greater body shame and weight preoccupation. However, no significant associations were identified for the indices of positive body image. These findings extend previous work by demonstrating that there are significant associations between negative body image and previously unexplored components of cardiac and gastric interoception. This, in turn, could have important clinical applications, such as the HEP and gastric-alpha PAC both serving as biomarkers of negative body image.

内感受是指对身体内部刺激的处理，而身体意象是指与外表相关的知觉、情感和认知。先前的研究发现，身体意象与内感受的自我报告和行为指标有关。在这里，我们通过检查正面（即身体欣赏、功能欣赏）和负面身体形象（即身体羞耻、体重关注）的测量与内感受处理的两个电生理指标，即心跳诱发电位（HEP）之间的关联来扩展这项研究) 和胃-α 相位-幅度耦合 (PAC)，在 36 名成人样本中。在负面身体形象指数和内感受变量之间确定了显着的负面关联。具体来说，更多的负 HEP 振幅和更低的胃 α PAC 都与更大的身体羞耻和体重关注相关。然而，没有发现正体形象指数的显着关联。这些发现通过证明负面身体形象与先前未探索的心脏和胃内感受成分之间存在显着关联来扩展先前的工作。反过来，这可能具有重要的临床应用，例如 HEP 和胃-α PAC，两者都可作为负面身体形象的生物标志物。这些发现通过证明负面身体形象与先前未探索的心脏和胃内感受成分之间存在显着关联来扩展先前的工作。反过来，这可能具有重要的临床应用，例如 HEP 和胃-α PAC，两者都可作为负面身体形象的生物标志物。这些发现通过证明负面身体形象与先前未探索的心脏和胃内感受成分之间存在显着关联来扩展先前的工作。反过来，这可能具有重要的临床应用，例如 HEP 和胃-α PAC，两者都可作为负面身体形象的生物标志物。