Prediction error and regularity detection underlie two dissociable mechanisms for computing the sense of agency
Prediction error and regularity detection underlie two dissociable mechanisms for computing the sense of agency
复制标题
预测误差和规律性检测是计算代理感的两种独立机制的基础
DOI：
10.1016/j.cognition.2019.104074
复制
发表时间：
2020
期刊：
影响因子：
3.4
通讯作者：
Haggard Patrick
中科院分区：
文献类型：
--
作者：
Wen Wen;Haggard Patrick
能动性是指控制自己的行为，并通过自己的行为来控制外界事件的主观感觉。根据计算运动控制模型，预测的感觉反馈与实际的感觉反馈比较的预测误差决定了人们对相应的结果事件是否有代理感。这一机制需要行动和结果之间关系的模型。然而，在一个新的环境中，这个模型还没有被学习，代理感必须在探索行为中出现。在本研究中，我们设计了一个新的控制检测任务，在这个任务中，参与者探索他们可以用电脑鼠标控制三个点的运动的程度，然后识别他们认为他们可以控制的点。预先记录的运动应用于两个点，参与者的实时运动只影响一个点的运动（即目标点）。我们用两种方法之一干扰了参与者对目标点运动的控制。在一种情况下，我们在参与者的运动和点运动之间应用了固定的角偏差变换。在另一种情况下，我们将参与者当前的动作与另一个动作的回放混合在一起，并使用由此产生的混合信号来驱动视觉点的位置。前一种干预改变了运动动作和视觉结果之间的匹配，但保持了两者之间的规律关系。相反，后者改变匹配和运动-视觉相关。至关重要的是，我们仔细选择了这两种干扰的强度，以便它们在简单的到达任务中引起相同程度的运动表现损伤，这表明两种干预产生了相当的预测误差。然而，我们发现视觉运动变换对检测自己控制下的点的能力的影响要比非线性干扰小得多。这表明，在人类的代理感中，一种类似相关的机制在检测持续的视觉运动规律方面发挥了特定的作用。这些规则检测机制在线性变换下保持不变，但在非线性变换下则不然。人类的能动性可能依赖于监测持续的运动-视觉规律，以及检测预测错误。
The sense of agency refers to the subjective feeling of controlling one’s own actions, and through them, events in the outside world. According to computational motor control models, the prediction errors from comparison between the predicted sensory feedback and actual sensory feedback determine whether people feel agency over the corresponding outcome event, or not. This mechanism requires a model of the relation between action and outcome. However, in a novel environment, where this model has not yet been learned, the sense of agency must emerge during exploratory behaviours. In the present study, we designed a novel control detection task, in which participants explored the extent to which they could control the movement of three dots with a computer mouse, and then identified the dot that they felt they could control. Pre-recorded motions were applied for two dots, and the participants’ real-time motion only influenced one dot’s motion (i.e. the target dot). We disturbed participants’ control over the motion of the target dot in one of two ways. In one case, we applied a fixed angular bias transformation between participant’s movements and dot movements. In another condition, we mixed the participant’s current movement with replay of another movement, and used the resulting hybrid signal to drive visual dot position. The former intervention changes the match between motor action and visual outcome, but maintains a regular relation between the two. In contrast, the latter alters both matching and motor-visual correlation. Crucially, we carefully selected the strength of these two perturbations so that they caused the same magnitude of impairment of motor performance in a simple reaching task, suggesting that both interventions produced comparable prediction errors. However, we found the visuomotor transformation had much less effect on the ability to detect which dot was under one’s own control than did the nonlinear disturbance. This suggests a specific role of a correlation-like mechanism that detects ongoing visual-motor regularity in the human sense of agency. These regularity-detection mechanisms would remain intact under the linear, but not the nonlinear transformation. Human sense of agency may depend on monitoring ongoing motor-visual regularities, as well as on detecting prediction errors.
影响因子：
2
作者：
Metcalfe, Janet;Eich, Teal S.;Miele, David B.
通讯作者：
Miele, David B.
影响因子：
5.3
作者：
S. Kitazawa;Tatsuya Kimura;T. Uka
通讯作者：
T. Uka
控制反馈作为习惯行为背后的动力。
影响因子：
--
作者：
O. Nafcha;E. Higgins;Baruch Eitam
通讯作者：
Baruch Eitam