In recent years, research on interoceptive abilities (i.e., sensibility, accuracy, and awareness) and their associations with emotional experience has flourished. Yet interoceptive abilities in alexithymia—a personality trait characterized by a difficulty in the cognitive interpretation of emotional arousal, which impacts emotional experience—remain under-investigated, thereby limiting a full understanding of subjective emotional experience processing. Research has proposed two contrasting explanations thus far: in one model, the dimensions of interoceptive sensibility and accuracy in alexithymia would increase; in the other model, they would decrease. Surprisingly, the contribution of interoceptive awareness has been minimally researched. In this study (N = 182), the relationship between participants’ level of alexithymia and the three interoceptive dimensions was tested. Our results show that the higher the level of alexithymia is, the higher interoceptive accuracy and sensibility (R² = 0.29 and R² = 0.14); conversely, the higher the level of alexithymia is, the lower interoceptive awareness (R² = 0.36). Moreover, an ROC analysis reveals that interoceptive awareness is the most accurate predictor of alexithymia, yielding over 92% accuracy. Collectively, these results support a coherent understanding of interoceptive abilities in alexithymia, whereby the dissociation of interoceptive accuracy and awareness may explain the underlying psycho-physiological mechanisms of alexithymia. A possible neurocognitive mechanism is discussed which suggests insurgence of psychosomatic disorders in alexithymia and related psychotherapeutic approaches.

近年来，关于内感受能力（即敏感性、准确性和意识）及其与情感体验的关联的研究蓬勃发展。然而，述情障碍中的内感受能力——一种以情绪唤起的认知解释困难为特征的人格特征，会影响情绪体验——仍未得到充分研究，从而限制了对主观情绪体验处理的​​全面理解。迄今为止，研究提出了两种截然不同的解释：在一个模型中，述情障碍的内感受敏感性和准确性的维度会增加；在另一个模型中，它们会减少。令人惊讶的是，对内感受意识的贡献的研究很少。本研究中（N = 182），测试了参与者的述情障碍水平与三个内感受维度之间的关系。我们的研究结果表明，述情障碍程度越高，内感受的准确性和敏感性越高（R ²  = 0.29 和R ²  = 0.14）；相反，述情障碍程度越高，内感受性意识越低（R ² = 0.36)。此外，ROC 分析表明，内感受意识是述情障碍最准确的预测指标，准确率超过 92%。总的来说，这些结果支持对述情障碍中内感受能力的一致理解，由此内感受准确性和意识的分离可以解释述情障碍的潜在心理生理机制。讨论了一种可能的神经认知机制，该机制表明述情障碍和相关心理治疗方法中心身疾病的兴起。