Sense of agency is the experience of control over one's own action and its consequent outcomes. The perceived time between a motor action and its consequent sensory outcomes (e.g., a flash of light) is shorter for a voluntary than involuntary action, a phenomenon known as intentional binding which has been used extensively as an implicit measure of sense of agency. We developed a novel task in which participants had to respond whether a flash appeared immediately or with a delay relative to their voluntary action. We found that under high, but not low, uncertainty about the perceived time between voluntary finger movement and a subsequent flash of light, a prediction signal was generated in the right inferior parietal lobule prior to motor action. This prediction signal was linked to the emergence of a sudden insight solution (colloquially referred to as "Aha!" moment) in the right superior temporal gyrus prior to response. Single-trial event-related potential analysis revealed a reliable correlation between amplitudes of pre-motor and pre-response activities. The results suggest the existence of a predictive mechanism under high uncertainty about the timing of the sensory consequences of a voluntary motor action. The results are in line with the optimal cue integration theory of sense of agency which states that both predictive and postdictive agency cues are crucial for the formation of sense of agency and the weight of each type of cue (predictive or postdictive) depends on their availability and reliability.

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右顶颞活动预测在感觉结果的不确定延迟下的代理感

代理感是控制自己的行为及其结果的体验。一个运动动作与其随之而来的感官结果（例如，一道闪光）之间的感知时间对于一个自愿的行动比非自愿的行动要短，这种现象被称为有意约束，它已被广泛用作一种隐含的代理感测量方法。我们开发了一项新颖的任务，参与者必须对闪光是立即出现还是相对于他们的自愿行为有延迟做出反应。我们发现，在手指随意运动和随后的闪光之间感知时间的高度不确定性下，在运动动作之前，在右顶叶下小叶中产生了预测信号。这个预测信号与反应前右侧颞上回突然出现的洞察力解决方案（通俗地称为“啊哈！”时刻）有关。单次试验事件相关电位分析揭示了运动前活动和反应前活动的幅度之间的可靠相关性。结果表明，在对自愿运动动作的感官后果的时间具有高度不确定性的情况下，存在一种预测机制。结果与代理感的最佳线索整合理论一致，该理论指出预测性和预测性代理线索对于代理感的形成至关重要，每种类型的线索（预测性或后继性）的权重取决于它们的可用性和可靠性。时刻）在响应前的右侧颞上回。单次试验事件相关电位分析揭示了运动前活动和反应前活动的幅度之间的可靠相关性。结果表明，在对自愿运动动作的感官后果的时间具有高度不确定性的情况下，存在一种预测机制。结果与代理感的最佳线索整合理论一致，该理论指出预测性和预测性代理线索对于代理感的形成至关重要，每种类型的线索（预测性或后继性）的权重取决于它们的可用性和可靠性。时刻）在响应前的右侧颞上回。单次试验事件相关电位分析揭示了运动前活动和反应前活动的幅度之间的可靠相关性。结果表明，在对自愿运动动作的感官后果的时间具有高度不确定性的情况下，存在一种预测机制。结果与代理感的最佳线索整合理论一致，该理论指出预测性和预测性代理线索对于代理感的形成至关重要，每种类型的线索（预测性或后继性）的权重取决于它们的可用性和可靠性。结果表明，在对自愿运动动作的感官后果的时间具有高度不确定性的情况下，存在一种预测机制。结果与代理感的最佳线索整合理论一致，该理论指出预测性和预测性代理线索对代理感的形成至关重要，每种类型的线索（预测或后置）的权重取决于它们的可用性和可靠性。结果表明，在对自愿运动动作的感官后果的时间具有高度不确定性的情况下，存在一种预测机制。结果与代理感的最佳线索整合理论一致，该理论指出预测性和预测性代理线索对代理感的形成至关重要，每种类型的线索（预测或后置）的权重取决于它们的可用性和可靠性。