Mizuhara Hiroaki, Uhlhaas Peter
Institute of Neuroscience and Psychology, University of Glasgow, Glasgow, United Kingdom.
Graduate School of Informatics, Kyoto University, Kyoto, Japan.
Front Psychol. 2021 Apr 1;12:635202. doi: 10.3389/fpsyg.2021.635202. eCollection 2021.
The sense of agency is a subjective feeling that one's own actions drive action outcomes. Previous studies have focused primarily on the temporal contingency between actions and sensory inputs as a possible mechanism for the sense of agency. However, the contribution of the integrity of visual inputs has not been systematically addressed. In the current study, we developed a psychophysical task to examine the role of visual inputs as well as temporal contingencies toward the sense of agency. Specifically, participants were required to track a target on a sinusoidal curve on a computer screen. Visual integrity of sensory inputs was manipulated by gradually occluding a computer cursor, and participants were asked to report the sense of agency on a nine-point Likert scale. Temporal contingency was manipulated by varying the delay between finger movements on a touchpad and cursor movements. The results showed that the sense of agency was influenced by both visual integrity and temporal contingency. These results are discussed in the context of current models that have proposed that the sense of agency emerges from the comparison of visual inputs with motor commands.
能动感是一种主观感受，即自己的行动驱动着行动结果。以往的研究主要集中在行动与感官输入之间的时间偶然性上，将其作为能动感的一种可能机制。然而，视觉输入完整性的作用尚未得到系统探讨。在当前的研究中，我们开发了一项心理物理学任务，以检验视觉输入以及时间偶然性对能动感的作用。具体而言，要求参与者在电脑屏幕上的正弦曲线上追踪一个目标。通过逐渐遮挡电脑光标来操纵感官输入的视觉完整性，并要求参与者在九点李克特量表上报告能动感。通过改变触摸板上手指移动与光标移动之间的延迟来操纵时间偶然性。结果表明，能动感受到视觉完整性和时间偶然性的影响。我们将在当前模型的背景下讨论这些结果，这些模型提出能动感源于视觉输入与运动指令的比较。
