Seeing Touches Early in Life.
Seeing Touches Early in Life.
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DOI：
10.1371/journal.pone.0134549
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Turati C
中科院分区：
文献类型：
--
作者：
Addabbo M;Longhi E;Bolognini N;Senna I;Tagliabue P;Macchi Cassia V;Turati C
触觉提供了关于周围世界的基本信息，以及关于我们自己行为的反馈。虽然触摸在生命的早期阶段非常重要，但迄今为止还没有研究调查婴儿处理暗示触摸的视觉刺激的能力。本研究探讨了视觉识别涉及他人的触摸手势的能力的发展起源。在视觉偏好任务中测量了注视时间和定向反应，在该任务中，参与者同时呈现两个视频，描述了涉及人体部位（脸，手）和/或物体（勺子）的触摸和非触摸手势。在实验1中，2日龄的新生儿和3个月大的婴儿观看了两段视频：在一段视频中，一只移动的手触摸了一个静止的脸，另一段视频中，移动的手在触摸之前停了下来。结果表明，只有3个月大的婴儿，而不是新生儿，区分触摸和不触摸的手势，表现出对前者的偏好。为了测试当被触摸的身体部位与面部不同时，新生儿是否会表现出优先的视觉反应，在实验2中，新生儿被呈现触摸/非触摸手势，其中手或无生命物体，即，一个勺子--移向静止的手。新手能够区分手到手的触摸手势，但他们没有表现出任何偏好的物体到手的触摸。目前的研究结果有利于早期视觉识别涉及人体部位之间相互作用的触摸手势的能力。
The sense of touch provides fundamental information about the surrounding world, and feedback about our own actions. Although touch is very important during the earliest stages of life, to date no study has investigated infants’ abilities to process visual stimuli implying touch. This study explores the developmental origins of the ability to visually recognize touching gestures involving others. Looking times and orienting responses were measured in a visual preference task, in which participants were simultaneously presented with two videos depicting a touching and a no-touching gesture involving human body parts (face, hand) and/or an object (spoon). In Experiment 1, 2-day-old newborns and 3-month-old infants viewed two videos: in one video a moving hand touched a static face, in the other the moving hand stopped before touching it. Results showed that only 3-month-olds, but not newborns, differentiated the touching from the no-touching gesture, displaying a preference for the former over the latter. To test whether newborns could manifest a preferential visual response when the touched body part is different from the face, in Experiment 2 newborns were presented with touching/no-touching gestures in which a hand or an inanimate object—i.e., a spoon- moved towards a static hand. Newborns were able to discriminate a hand-to-hand touching gesture, but they did not manifest any preference for the object-to-hand touch. The present findings speak in favour of an early ability to visually recognize touching gestures involving the interaction between human body parts.