BACKGROUND Missing action completion signals are assumed to trigger repetitive behavior and feelings of the action "not being right". This proposal is based mostly on individual's self-reports. Here, we investigated the influence of experimentally manipulated action completion experience and the obsessive-compulsive (OC) trait of incompleteness on behavioral and neurophysiological measures of action inhibition. METHODS Action completion was manipulated in an adapted Go/NoGo task, and OC trait incompleteness was assessed in healthy participants. More commission errors and faster responses were expected after missing action completion, especially for individuals with high OC trait incompleteness. The inhibition-related event-related potentials (ERPs) N200 and P300 were also measured. RESULTS High OC trait incompleteness led to more errors following omitted- and faster responses during commission errors following incongruent outcomes. Furthermore, lower N200 was associated with worse response inhibition, and high OC trait incompleteness was associated with reduced N200, but not reduced P300 amplitude. These findings provide evidence that trait-like feelings of incompleteness may underlie maladaptive action repetition and impaired inhibitory control as observed in OCD.

中文翻译：

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具有高度强迫性不完整特征的个体的行动抑制：一项ERP研究

背景技术假设缺少动作完成信号触发重复行为和动作“不正确”的感觉。该提议主要基于个人的自我报告。在这里，我们研究了实验操作的动作完成体验和不完整的强迫 (OC) 特征对动作抑制的行为和神经生理学测量的影响。方法 在适应的 Go/NoGo 任务中操纵动作完成，并在健康参与者中评估 OC 特征不完整。错过动作完成后，预计会有更多的委托错误和更快的响应，特别是对于具有高 OC 特质不完整性的个人。还测量了抑制相关事件相关电位 (ERP) N200 和 P300。结果 高 OC 特征不完整导致更多错误后遗漏 - 和在不一致的结果后佣金错误期间更快的响应。此外，较低的 N200 与较差的反应抑制相关，而高 OC 性状不完整与降低的 N200 相关，但不降低 P300 幅度。这些发现提供了证据，即像在强迫症中观察到的那样，不完整的特质样感觉可能是适应不良动作重复和抑制控制受损的基础。