Department of Human Movement Sciences, Vrije Universiteit Amsterdam.
Psychol Sci. 2019 Jun;30(6):822-829. doi: 10.1177/0956797619837981. Epub 2019 Mar 27.
When lifting an object, it takes time to decide how heavy it is. How does this weight judgment develop? To answer this question, we examined when visual size information has to be present to induce a size-weight illusion. We found that a short glimpse (200 ms) of size information is sufficient to induce a size-weight illusion. The illusion occurred not only when the glimpse was before the onset of lifting but also when the object's weight could already be felt. Only glimpses more than 300 ms after the onset of lifting did not influence the judged weight. This suggests that it takes about 300 ms to reach a perceptual decision about the weight.
当提起一个物体时，需要时间来判断它有多重。这种重量判断是如何发展的？为了回答这个问题，我们研究了视觉大小信息何时必须存在以引起大小重量错觉。我们发现，短暂的一瞥（200 毫秒）大小信息就足以引起大小重量错觉。这种错觉不仅发生在提起物体之前，而且在已经感觉到物体重量的时候也会发生。只有在提起物体 300 毫秒后看到的物体大小信息才不会影响对物体重量的判断。这表明，大约需要 300 毫秒才能对物体的重量做出知觉决定。
