Department of Psychology, Cognitive Psychology, University of Trier, Universitätsring 15, 54286, Trier, Germany.
Department of Experimental Psychology, University of Oxford, Oxford, UK.
Psychol Res. 2024 Feb;88(1):148-155. doi: 10.1007/s00426-023-01849-1. Epub 2023 Jun 27.
Representational momentum describes the typical overestimation of the final location of a moving stimulus in the direction of stimulus motion. While systematically observed in different sensory modalities, especially vision and audition, in touch, empirical findings indicate a mixed pattern of results, with some published studies suggesting the existence of the phenomenon, while others do not. In the present study, one possible moderating variable, the relative probabilities of different trial types, was explored in an attempt to resolve the seemingly contradictory findings in the literature. In some studies, only consistently moving target stimuli were presented and no representational momentum was observed, while other studies have included inconsistently moving target stimuli in the same experimental block, and observed representational momentum. Therefore, the present study was designed to systematically compare the localization of consistent target motion stimuli across two experimental blocks, for which either only consistent motion trials were presented, or else mixed with inconsistent target motion trials. The results indicate a strong influence of variations in the probability of different trial types on the occurrence of representational momentum. That is, representational momentum only occurred when both trial types (inconsistent and consistent target motion) were presented within one experimental block. The results are discussed in light of recent theoretical advancements in the literature, namely the speed prior account of motion perception.
表象动量描述了在刺激运动方向上对运动刺激最终位置的典型高估。虽然在不同的感觉模态中，特别是视觉和听觉中，都有系统地观察到这种现象，但在触觉中，实证研究结果表明存在混合的结果模式，一些已发表的研究表明存在这种现象，而另一些则没有。在本研究中，探讨了一个可能的调节变量，即不同试验类型的相对概率，试图解决文献中看似矛盾的发现。在一些研究中，只呈现了持续运动的目标刺激，没有观察到表象动量，而其他研究在同一实验块中包含了不一致运动的目标刺激，并观察到了表象动量。因此，本研究旨在系统比较两种实验块中一致目标运动刺激的定位，一种情况下只呈现一致运动试验，另一种情况下则与不一致目标运动试验混合呈现。结果表明，不同试验类型概率的变化对表象动量的发生有很强的影响。也就是说，只有在一个实验块中同时呈现两种试验类型（不一致和一致的目标运动）时，才会出现表象动量。结果根据文献中运动知觉的速度先验理论进行了讨论。
