Ujiie Yuta, Kanazawa So, Yamaguchi Masami K
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J Vis. 2020 Aug 3;20(8):5. doi: 10.1167/jov.20.8.5.
Material perception is facilitated by multisensory interactions that enable us to associate the visual properties of a material with its auditory properties. Such interactions develop during infancy and are assumed to depend on the familiarity of materials. Here, we aimed to pinpoint the age at which infants acquire multisensory interactions for the perception of water, which is a familiar material to them. We presented two side-by-side movies of pouring water and ice while providing the corresponding sounds of water and ice, as well as silence. We found that infants older than 5 months of age looked longer at the water movie when they heard the sound of water. Conversely, they did not look at the ice movie when they heard the sound of ice. These results indicate that at approximately 5 months of age, infants develop multisensory interactions between auditory and visual properties of water, but not of ice. The contrasting results between water and ice suggest that the development of multisensory material perception depends on the frequency of interactions with materials during infancy.
多感官相互作用促进了对物质的感知，使我们能够将物质的视觉属性与其听觉属性联系起来。这种相互作用在婴儿期就开始发展，并被认为取决于对物质的熟悉程度。在这里，我们旨在确定婴儿获得用于感知水（对他们来说是一种熟悉的物质）的多感官相互作用的年龄。我们并排播放了两段倒水和倒冰的视频，同时提供水和冰的相应声音以及静音。我们发现，5个月以上的婴儿在听到水的声音时，看水的视频的时间更长。相反，当他们听到冰的声音时，他们不会看冰的视频。这些结果表明，大约在5个月大时，婴儿在水的听觉和视觉属性之间发展出多感官相互作用，但冰没有。水和冰之间的对比结果表明，多感官物质感知的发展取决于婴儿期与物质相互作用的频率。
