Sugano Yoshimori
Department of Business and Marketing, Faculty of Commerce, Kyushu Sangyo University, Fukuoka, Japan.
Front Psychol. 2021 Apr 26;12:580441. doi: 10.3389/fpsyg.2021.580441. eCollection 2021.
Exposure to delayed sensory feedback changes perceived simultaneity between action and feedback [temporal recalibration (TR)] and even modulates the sense of agency (SoA) over the feedback. To date, however, it is not clear whether the modulation of SoA by TR is caused by a change in perceptual sensitivity or decision criterion of self-agency. This experimental research aimed to tease apart these two by applying the signal detection theory (SDT) to the agency judgment over auditory feedback after voluntary action. Participants heard a short sequence of tone pips with equal inter-onset intervals, and they reproduced it by pressing a computer mouse. The delay of each tone pip after the mouse press was manipulated as 80 (baseline) or 180 ms (delayed). Subsequently, the participants reproduced it, in which the delay was fixed at 80 ms and there was a 50% chance that the computer took over the control of the tone pips from the participants. The participants' task was to discriminate who controlled the tone pips and to judge synchrony between tone pips and mouse presses. Results showed that the modulation of the SoA by the TR is caused by a shift in the decision criterion but not in the perceptual sensitivity of agency.
接触延迟的感觉反馈会改变动作与反馈之间的感知同步性[时间重新校准（TR）]，甚至会调节对反馈的能动感（SoA）。然而，迄今为止，尚不清楚TR对SoA的调节是由自我能动感的感知敏感性变化还是决策标准变化引起的。本实验研究旨在通过将信号检测理论（SDT）应用于对自愿行动后听觉反馈的能动判断来区分这两者。参与者听到一系列具有相等起始间隔的短音脉冲序列，并通过按下电脑鼠标进行重现。鼠标按下后每个音脉冲的延迟被设置为80（基线）或180毫秒（延迟）。随后，参与者进行重现，其中延迟固定为80毫秒，并且电脑有50%的机会从参与者手中接管音脉冲的控制。参与者的任务是辨别谁控制了音脉冲，并判断音脉冲与鼠标按下之间的同步性。结果表明，TR对SoA的调节是由决策标准的变化引起的，而不是由能动感的感知敏感性变化引起的。
