Department of Psychology, Cognitive Psychology, University of Trier, Trier, Germany.
Department of Experimental Psychology, University of Oxford, Oxford, UK.
Atten Percept Psychophys. 2021 Jul;83(5):2113-2122. doi: 10.3758/s13414-021-02285-2. Epub 2021 Mar 29.
The perception of dynamic objects is sometimes biased. For example, localizing a moving object after it has disappeared results in a perceptual shift in the direction of motion, a bias known as representational momentum. We investigated whether the temporal characteristics of an irrelevant, spatially uninformative vibrotactile stimulus bias the perceived location of a visual target. In two visuotactile experiments, participants judged the final location of a dynamic, visual target. Simultaneously, a continuous (starting with the onset of the visual target, Experiments 1 and 2) or brief (33-ms stimulation, Experiment 2) vibrotactile stimulus (at the palm of participant's hands) was presented, and the offset disparity between the visual target and tactile stimulation was systematically varied. The results indicate a cross-modal influence of tactile stimulation on the perceived final location of the visual target. Closer inspection of the nature of this cross-modal influence, observed here for the first time, reveals that the vibrotactile stimulus was likely just taken as a temporal cue regarding the offset of the visual target, but no strong interaction and combined processing of the two stimuli occurred. The present results are related to similar cross-modal temporal illusions and current accounts of multisensory perception, integration, and cross-modal facilitation.
对动态物体的感知有时会产生偏差。例如，在物体消失后对其进行定位会导致运动方向的感知变化，这种偏差被称为表象动量。我们研究了一个不相关的、空间上无信息的振动触觉刺激是否会影响视觉目标的感知位置。在两个视触实验中，参与者判断动态视觉目标的最终位置。同时，呈现连续的（从视觉目标开始，实验 1 和 2）或短暂的（33 毫秒刺激，实验 2）振动触觉刺激（在参与者手掌上），并系统地改变视觉目标和触觉刺激之间的结束差异。结果表明，触觉刺激对视觉目标的最终感知位置有跨模态影响。对这种跨模态影响的本质进行更仔细的观察，这是首次观察到，表明振动触觉刺激可能只是被视为视觉目标结束的时间线索，但没有发生强烈的相互作用和两种刺激的联合处理。目前的结果与类似的跨模态时间错觉以及当前的多感觉感知、整合和跨模态促进的解释有关。
