Li Feiming, Wang Lei, Jia Lei, Lu Jiahao, Wu Youping, Wang Cheng, Wang Jun
Key Laboratory of Intelligent Education Technology and Application of Zhejiang Province, Zhejiang Normal University, Jinhua, China.
College of Education and Human Development, Zhejiang Normal University, Jinhua, China.
Front Psychol. 2021 Feb 25;12:602872. doi: 10.3389/fpsyg.2021.602872. eCollection 2021.
Previous research has demonstrated that duration of implied motion (IM) was dilated, whereas hMT+ activity related to perceptual processes on IM stimuli could be modulated by their motion coherence. Based on these findings, the present study aimed to examine whether subjective time perception of IM stimuli would be influenced by varying coherence levels. A temporal bisection task was used to measure the subjective experience of time, in which photographic stimuli showing a human moving in four directions (left, right, toward, or away from the viewer) were presented as probe stimuli. The varying coherence of these IM stimuli was manipulated by changing the percentage of pictures implying movement in one direction. Participants were required to judge whether the duration of probe stimulus was more similar to the long or short pre-presented standard duration. As predicted, the point of subjective equality was significantly modulated by the varying coherence of the IM stimuli, but not for no-IM stimuli. This finding suggests that coherence level might be a key mediating factor for perceived duration of IM images, and top-down perceptual stream from inferred motion could influence subjective experience of time perception.
先前的研究表明，隐含运动（IM）的持续时间会延长，而与IM刺激的感知过程相关的hMT+活动可通过其运动连贯性进行调节。基于这些发现，本研究旨在探讨IM刺激的主观时间感知是否会受到不同连贯水平的影响。采用时间二分任务来测量时间的主观体验，其中呈现显示人类向四个方向（向左、向右、朝向或远离观察者）移动的摄影刺激作为探测刺激。通过改变暗示向一个方向运动的图片百分比来操纵这些IM刺激的不同连贯性。参与者被要求判断探测刺激的持续时间与预先呈现的长或短标准持续时间哪一个更相似。正如预测的那样，主观相等点受到IM刺激不同连贯性的显著调节，但对无IM刺激则不然。这一发现表明，连贯水平可能是IM图像感知持续时间的关键中介因素，并且来自推断运动的自上而下的感知流可能会影响时间感知的主观体验。
