Aberrant sense of agency in patients with schizophrenia: Forward and backward over-attribution of temporal causality during intentional action
Aberrant sense of agency in patients with schizophrenia: Forward and backward over-attribution of temporal causality during intentional action
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DOI：
10.1016/j.psychres.2011.10.021
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发表时间：
2012-06-30
影响因子：
11.3
通讯作者：
Kashima, Haruo
中科院分区：
文献类型：
--
作者：
Maeda, Takaki;Kato, Motoichiro;Kashima, Haruo
精神分裂症的自我干扰已经从异常代理感的角度进行了解释和研究。我们设计了一项代理归因任务，评估有意行为和外部事件之间时间因果关系的明确体验，而不会受到身体运动所有权感的任何混淆。在每次试验中，计算机屏幕底部都会出现一个正方形块并向上移动。受试者被指示在听到蜂鸣声时按下按键。当按下琴键时，曲子会随着各种时间偏差而跳跃。受试者被要求对每次试验做出机构判断。我们证明，与正常对照相比，精神分裂症患者观察到了过度的代理感。此外，即使外部事件被安排在他们的行动之前，患者群体也更倾向于感受到一种代理感。因此，患者在有意识的行动过程中，在时间事件序列中感受到向前和向后夸大的因果效力。自我与外部世界之间的时间因果关系体验的混乱可能是精神分裂症患者自我困扰的基础。 (c) 2012 Elsevier Ireland Ltd. 保留所有权利。
Self-disturbances in schizophrenia have been explained and studied from the standpoint of an abnormal sense of agency. We devised an agency-attribution task that evaluated explicit experiences of the temporal causal relations between an intentional action and an external event, without any confounding from sense of ownership of body movement. In each trial, a square piece appeared on the bottom of a computer screen and moved upward. Subjects were instructed to press a key when they heard a beep. When the key was pressed, the piece jumped with various temporal biases. Subjects were instructed to make an agency judgment for each trial. We demonstrated that an excessive sense of agency was observed in patients with schizophrenia compared with normal controls. Moreover, patient groups had a greater tendency to feel a sense of agency even when external events were programmed to precede their action. Therefore, patients felt both forward and backward exaggerated causal efficacy in the temporal event sequence during the intentional action. Confusion in the experience of temporal causal relations between the self and the external world may underlie self-disturbances in schizophrenia. (c) 2012 Elsevier Ireland Ltd. All rights reserved.