The reduction of neural responses to self‐generated stimuli compared to external stimuli is thought to result from the matching of motor‐based sensory predictions and sensory reafferences and to serve the identification of changes in the environment as caused by oneself. The amplitude of the auditory event‐related potential (ERP) component N1 seems to closely reflect this matching process, while the later positive component (P2/ P3a) has been associated with judgments of agency, which are also sensitive to contextual top‐down information. In this study, we examined the effect of perceived control over sound production on the processing of self‐generated and external stimuli, as reflected in these components. We used a new version of a classic two‐button choice task to induce different degrees of the illusion of control (IoC) and recorded ERPs for the processing of self‐generated and external sounds in a subsequent task. N1 amplitudes were reduced for self‐generated compared to external sounds, but not significantly affected by IoC. P2/3a amplitudes were affected by IoC: We found reduced P2/3a amplitudes after a high compared to a low IoC induction training, but only for self‐generated, not for external sounds. These findings suggest that prior contextual belief information induced by an IoC affects later processing as reflected in the P2/P3a, possibly for the formation of agency judgments, while early processing reflecting motor‐based predictions is not affected.

中文翻译：

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控制错觉会影响自我生成动作的听觉结果的 ERP 振幅降低

与外部刺激相比，对自我产生的刺激的神经反应减少被认为是由于基于运动的感觉预测和感觉重新参考的匹配，并有助于识别由自身引起的环境变化。听觉事件相关电位 (ERP) 分量 N1 的幅度似乎密切反映了这种匹配过程，而后来的正分量 (P2/P3a) 与代理判断相关，后者也对上下文自上而下信息敏感. 在这项研究中，我们检查了对声音产生的感知控制对处理自身产生的和外部刺激的影响，正如这些成分所反映的那样。我们使用新版本的经典双按钮选择任务来诱导不同程度的控制错觉 (IoC)，并记录 ERP 以在后续任务中处理自身生成的声音和外部声音。与外部声音相比，自生声音的 N1 幅度降低，但不受 IoC 的显着影响。P2/3a 幅度受 IoC 影响：我们发现，与低 IoC 感应训练相比，高 IoC 诱导训练后 P2/3a 幅度降低，但仅限于自身产生的声音，而不是外部声音。这些发现表明，由 IoC 诱导的先前上下文信念信息会影响 P2/P3a 中反映的后期处理，可能是为了形成代理判断，而反映基于运动的预测的早期处理不受影响。与外部声音相比，自生声音的 N1 幅度降低，但不受 IoC 的显着影响。P2/3a 幅度受 IoC 影响：我们发现，与低 IoC 感应训练相比，高 IoC 诱导训练后 P2/3a 幅度降低，但仅限于自身产生的声音，而不是外部声音。这些发现表明，由 IoC 诱导的先前上下文信念信息会影响 P2/P3a 中反映的后期处理，可能是为了形成代理判断，而反映基于运动的预测的早期处理不受影响。与外部声音相比，自生声音的 N1 幅度降低，但不受 IoC 的显着影响。P2/3a 幅度受 IoC 影响：我们发现，与低 IoC 感应训练相比，高 IoC 诱导训练后 P2/3a 幅度降低，但仅限于自身产生的声音，而不是外部声音。这些发现表明，由 IoC 诱导的先前上下文信念信息会影响 P2/P3a 中反映的后期处理，可能是为了形成代理判断，而反映基于运动的预测的早期处理不受影响。