The effect of biomechanical properties of motion on infants' perception of goal-directed grasping actions
The effect of biomechanical properties of motion on infants' perception of goal-directed grasping actions
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DOI：
10.1016/j.jecp.2014.08.005
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发表时间：
2015-01-01
影响因子：
2.6
通讯作者：
Turati, Chiara
中科院分区：
文献类型：
--
作者：
Geangu, Elena;Senna, Irene;Turati, Chiara
从很小的时候起，婴儿就把别人的行为视为目标导向。然而，这一能力背后的过程仍有争议。在这项研究中，我们调查了（a）4个月和6个月大的婴儿和成年人是否能在一个动作背景下区分人手的生物力学特性，（B）手部运动的生物力学操纵对预期动作目标的能力有影响，抓握运动经验的出现与婴儿区分手部运动的生物力学和预期动作目标的能力有关。6个月大的婴儿区分生物力学上可能的和不可能的抓握，在某些（但不是全部）情况下，他们对可能的行动目标进行了更多的预期性注视。4个月和6个月的婴儿的手的生物力学特性的处理显着相关的能力，以预期的目标抓动作。重要的是，那些具有更高精度抓握技能的4个月大的婴儿表现出更快的预期注视动作的目标。这些研究结果表明，多个来源的信息从一个动作场景是相互依赖的，感知信息和运动经验的行动是相关的在线预测的最终目标的行动。(C)2014年爱思唯尔公司All rights reserved.
From a very young age, infants perceive others' actions as goal directed. Yet, the processes underlying this competence are still debated. In this study, we investigated whether (a) 4- and 6-month-old infants and adults discriminate the biomechanical properties of the human hand within an action context, (b) the manipulation of the biomechanics of hand movements has an impact on the ability to anticipate the goal of an action, and (c) the emergence of motor experience with grasping is related to infants' ability to discriminate the biomechanics of hand movements and to anticipate the action goal. The 6-month-olds discriminated between biomechanically possible and impossible grasps, and in some (but not all) instances they made more anticipatory gaze shifts toward the goal of the possible action. Both the 4- and 6-month-olds' processing of biomechanical properties of the hand were significantly related to their ability to anticipate the goal of a grasping action. Importantly, those 4-month-olds with higher precision grasping skills manifested faster anticipatory gazes toward the goal of the action. These findings suggest that multiple sources of information from an action scene are interdependent and that both perceptual information and motor experience with an action are relevant for on-line prediction of the final goal of the action. (C) 2014 Elsevier Inc. All rights reserved.