Department of Neuroscience, University of Parma, Parma, Italy.
Conscious Cogn. 2012 Sep;21(3):1365-74. doi: 10.1016/j.concog.2012.05.001. Epub 2012 Jun 4.
Schizophrenia spectrum has been associated with a disruption of the basic sense of self, which pertains, among others, the representation of one's own body. We investigated the impact of either implicit or explicit access to the representation of one's own body-effectors on bodily self-awareness, in first-episode schizophrenia (FES) patients and healthy controls (HCs). We contrasted their performance in an implicit self-recognition task (visual matching) and in an explicit self/other discrimination task. Both tasks employed participant's own and others' body-effectors. Concerning the implicit task, HCs were more accurate with their own than with others' body-effectors, whereas patients did not show such self-advantage. Regarding the explicit task, both groups did not exhibit a self-advantage, and patients showed a higher percentage of self-misattribution errors. Neither self/other nor implicit/explicit effects were found in both groups when processing inanimate-objects. We propose that FES patients suffer of a disturbed implicit sense of bodily self.
精神分裂症谱系与基本自我意识的破坏有关，其中包括对自己身体的表现。我们研究了在首次发作的精神分裂症 (FES) 患者和健康对照组 (HCs) 中，对自身身体效应器的内隐或外显访问对身体自我意识的影响。我们比较了他们在内隐自我识别任务（视觉匹配）和外显自我/他人区分任务中的表现。这两个任务都使用了参与者自己和他人的身体效应器。关于内隐任务，HCs 对自己的身体效应器比他人的更准确，而患者则没有表现出这种自我优势。关于外显任务，两组都没有表现出自我优势，患者表现出更高比例的自我归因错误。当处理无生命物体时，两组都没有发现自我/他人或内隐/外显的影响。我们提出，FES 患者的身体自我意识存在受损。
