Abstract One aspect of selfhood that may have relevance for borderline personality disorder (BPD) is variation in sense of body ownership. We employed the rubber hand illusion to manipulate sense of body ownership in BPD. We extended previous research on illusory body ownership in BPD by testing: (i) two illusion conditions: asynchronous and synchronous stimulation, (ii) relationship between illusion experience and BPD symptoms, and (iii) relationship between illusion experience and maladaptive personality traits. We measured illusion strength (questionnaire responses), proprioceptive drift (perceived shift in physical hand position), BPD symptoms (Revised Diagnostic Interview for Borderlines score), and maladaptive personality traits (Personality Inventory for DSM-5) in 24 BPD and 21 control participants. For subjective illusion strength, we found main effects of group (BPD > healthy control, F(1, 43) = 11.94, P = 0.001) and condition (synchronous > asynchronous, F(1, 43) = 22.80, P < 0.001). There was a group × condition interaction for proprioceptive drift (F(1, 43) = 6.48, P = 0.015) such that people with BPD maintained illusion susceptibility in the asynchronous condition. Borderline symptom severity correlated with illusion strength within the BPD group, and this effect was specific to affective (r = 0.45, P < 0.01) and cognitive symptoms (r = 0.46, P < 0.01). Across all participants, trait psychoticism correlated with illusion strength (r = 0.44, P < 0.01). People with BPD are more susceptible to illusory body ownership than controls. This is consistent with the clinical literature describing aberrant physical and emotional experiences of self in BPD. A predictive coding framework holds promise to develop testable mechanistic hypotheses for disrupted bodily self in BPD.

中文翻译：

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边缘性人格障碍中的虚幻身体所有权

摘要与边缘性人格障碍（BPD）相关的自我性方面是身体所有权感的变化。我们采用了橡胶手错觉来操纵BPD中的身体所有权感。我们通过测试来扩展先前对BPD中虚幻身体所有权的研究：（i）两种幻觉条件：异步和同步刺激；（ii）幻觉经验与BPD症状之间的关系；以及（iii）幻觉经验与适应不良的人格特质之间的关系。我们在24名BPD和21名对照参与者中测量了幻觉强度（问卷调查问卷响应），本体感受性漂移（感知到的手部身体位置发生了移位），BPD症状（对Borderlines评分的修订诊断访谈）和适应不良的人格特征（DSM-5的人格问卷）。 。对于主观幻觉强度，我们发现了组的主要影响（BPD>健康对照，F（1，43）= 11.94，P = 0.001）和状况（同步>异步，F（1，43）= 22.80，P <0.001）。本体感受漂移存在组×条件交互作用（F（1，43）= 6.48，P = 0.015），使得BPD患者在异步条件下保持幻觉敏感性。BPD组中的临界症状严重程度与幻觉强度相关，并且这种影响特定于情感（r = 0.45，P <0.01）和认知症状（r = 0.46，P <0.01）。在所有参与者中，特质精神病与幻觉强度相关（r = 0.44，P <0.01）。与对照组相比，患有BPD的人更容易产生虚幻的身体所有权。这与描述BPD中自我异常的身体和情绪体验的临床文献一致。