Department of Medicine and Surgery, University of Parma, Parma, Italy.
Department of Medicine and Surgery, University of Parma, Parma, Italy.
Schizophr Res. 2019 Apr;206:225-235. doi: 10.1016/j.schres.2018.11.018. Epub 2018 Nov 23.
Schizophrenia has been described as a psychiatric condition characterized by deficits in one's own and others' face recognition, as well as by a disturbed sense of body-ownership. To date, no study has integrated these two lines of research with the aim of investigating Enfacement Illusion (EI) proneness in schizophrenia. To accomplish this goal, the classic EI protocol was adapted to test the potential plasticity of both Self-Other and Other-Other boundaries. Results showed that EI induced the expected malleability of Self-Other boundary among both controls and patients. Interestingly, for the first time, the present study demonstrates that also the Other-Other boundary was influenced by EI. Furthermore, comparing the two groups, the malleability of the Other-Other boundary showed an opposite modulation. These results suggest that, instead of greater Self-Other boundary plasticity, a qualitative difference can be detected between schizophrenia patients and controls in the malleability of the Other-Other boundary. The present study points out a totally new aspect about body-illusions and schizophrenia disorder, demonstrating that EI is not only confined to self-sphere but it also affects the way we discriminate others, representing a potential crucial aspect in the social domain.
精神分裂症被描述为一种精神疾病，其特征是在自身和他人的面部识别方面存在缺陷，以及身体所有权感紊乱。迄今为止，尚无研究将这两条研究路线结合起来，旨在调查精神分裂症中的易感性错觉（EI）。为了实现这一目标，经典的 EI 协议被改编，以测试自我-他人和他人-他人边界的潜在可塑。结果表明，EI 诱导了对照组和患者的自我-他人边界的预期可变性。有趣的是，本研究首次证明，其他-他人边界也受到 EI 的影响。此外，将两组进行比较，其他-他人边界的可变性显示出相反的调节。这些结果表明，与更大的自我-他人边界的可变性相比，可以在精神分裂症患者和对照组之间检测到其他-他人边界的可变性方面的定性差异。本研究指出了关于身体错觉和精神分裂症障碍的一个全新方面，证明 EI 不仅局限于自我领域，而且还影响我们区分他人的方式，这是社交领域的一个潜在关键方面。
