PDF(Pubmed)
Abstract：
The size-weight illusion is a phenomenon where a smaller object is perceived heavier than an equally weighted larger object. The sensorimotor mismatch theory proposed that this illusion occurs because of a mismatch between efferent motor commands and afferent sensory feedback received when lifting large and small objects (i.e., the application of too little and too much lifting force, respectively). This explanation has been undermined by studies demonstrating a separation between the perceived weight of objects and the lifting forces that are applied on them. However, this research suffers from inconsistencies in the choice of lifting force measures reported. Therefore, we examined the contribution of sensorimotor mismatch in the perception of weight in the size-weight illusion and in non-size-weight illusion stimuli and evaluated the use of a lifting force aggregate measure comprising the four most common lifting force measures used in previous research. In doing so, the sensorimotor mismatch theory was mostly supported. In a size-weight illusion experiment, the lifting forces correlated with weight perception and, contrary to some earlier research, did not adapt over time. In a non-size-weight illusion experiment, switches between lifting light and heavy objects resulted in perceiving the weight of these objects differently compared to no switch trials, which mirrored differences in the manner participants applied forces on the objects. Additionally, we reveal that our force aggregate measure can allow for a more sensitive and objective examination of the effects of lifting forces on objects.
摘要：
尺寸-重量错觉是一种现象，其中较小的对象比同等权重的较大对象更重。感觉运动不匹配理论提出，这种错觉的发生是由于在举起大小物体时收到的传出运动命令和传入感觉反馈之间的不匹配（即，施加的举升力太少和太大，分别)。研究表明，物体的感知重量与施加在其上的提升力之间存在分离，从而破坏了这种解释。然而,这项研究在报告的提升力措施的选择上存在不一致。因此,我们研究了感觉运动不匹配在大小-重量错觉和非大小-重量错觉刺激中对重量感知的影响,并评估了提升力汇总测量的使用情况,其中包括先前研究中使用的四种最常见的提升力测量值.在这样做的时候，感觉运动不匹配理论得到了大部分支持.在大小重量错觉实验中，提升力与重量感知相关，与早期的一些研究相反，随着时间的推移没有适应。在非尺寸重量错觉实验中，与没有切换试验相比，在提升轻物和重物之间进行切换会导致对这些物体重量的感知不同，这反映了参与者在物体上施加力的方式的差异。此外,我们发现，我们的力总和测量可以更敏感和客观地检查提升力对物体的影响。
