The boundaries of the self: The sense of agency across different sensorimotor aspects
The boundaries of the self: The sense of agency across different sensorimotor aspects
复制标题
DOI：
10.1167/19.4.14
复制
发表时间：
2019-04-01
影响因子：
1.8
通讯作者：
Salomon, Roy
中科院分区：
文献类型：
--
作者：
Krugwasser, Amit Regev;Harel, Eiran V.;Salomon, Roy
代理感（SoA）是控制我们行为的感觉。SoA被认为主要依赖于对一个人行为的感官结果的预测和实际感官结果的比较。先前的研究表明，当一个人的行为和感官反馈之间存在差异时，报告的SoA就会减少。SoA的实验操作通常是通过引入特定感觉运动方面的运动动作和视觉反馈之间的差异来诱导的。例如，在动作与其感官反馈之间引入延迟或空间偏差会减少SoA。然而，尚不清楚SoA背后的感觉运动预测过程在不同方面之间是否相关。在一个探索性实验和一个预注册实验中，我们测试了主体内设计中跨时间、空间和解剖方面的代理感。使用一种新颖的虚拟现实任务，允许操纵不同方面的运动动作的视觉反馈，我们表明代理的敏感性在各个方面是不同的，代理判断在受试者内部的各个方面是相关的，并且将所看到的动作归因于自我或外部来源的偏见也是相关的。我们的研究结果表明，SoA背后的感觉运动预测机制在不同方面之间是相关的，人们对代理判断的方向性有倾向。这些发现揭示了SoA在感觉运动方面的心理物理属性。数据和预注册可在https:// goo.gl/SkbGrb上获得。
The sense of agency (SoA) is the sensation of control over our actions. SoA is thought to rely mainly upon the comparison of predictions regarding the sensory outcomes of one's actions and the actual sensory outcomes. Previous studies have shown that when a discrepancy is introduced between one's actions and the sensory feedback, the reported SoA is reduced. Experimental manipulations of SoA are typically induced by introducing a discrepancy between a motor action and visual feedback of a specific sensorimotor aspect. For example, introducing a delay or a spatial deviation between the action and its sensory feedback reduces SoA. However, it is yet unclear whether the sensorimotor prediction processes underlying SoA are related between different aspects. Here in one exploratory and one preregistered experiment we tested the sense of agency across temporal, spatial, and anatomical aspects in a within-subject design. Using a novel virtual-reality task allowing the manipulation of the visual feedback of a motor action across different aspects, we show that the sensitivity of agency is different across aspects, agency judgments are correlated across aspects within subjects and bias toward attributing the viewed action to the self or to an external source is correlated as well. Our results suggest that sensorimotor prediction mechanisms underlying SoA are related between different aspects and that people have a predisposition for the directionality of agency judgments. These findings reveal the psychophysical attributes of SoA across sensorimotor aspects. Data and preregistration are available at https:// goo.gl/SkbGrb.