Evidence of motor planning in infant reaching behavior
Evidence of motor planning in infant reaching behavior
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DOI：
10.1111/1467-9280.24421
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发表时间：
2003-07-01
影响因子：
8.2
通讯作者：
McCarty, ME
中科院分区：
文献类型：
--
作者：
Claxton, LJ;Keen, R;McCarty, ME
当成年人达到一个物体，他们的方法运动的运动学措施的影响，他们打算做什么后gradingit.We研究是否会反映在婴儿达到的方法，以把握阶段。21名10个月大的婴儿被鼓励将球扔进浴缸或将其放入管子中。使用运动分析系统获得的方法阶段的运动学措施，达到对球。婴儿和成年人一样，如果他们随后要扔球，而不是在精确动作中使用它，他们会更快地伸手去拿球。球的知觉方面是相同的，不能解释这些运动学差异。婴儿似乎提前计划了他们行动的两个部分。我们的研究结果为婴儿运动规划的复杂程度提供了证据，以前没有报道过。
When adults reach for an object, kinematic measures of their approach movement are affected by what they intend to do after grasping it. We examined whether such future intended actions would be reflected in the approach-to-grasp phase of infant reaching. Twenty-one 10-month-old infants were encouraged to either throw a ball into a tub or fit it down a tube. Kinematic measures of the approach phase of the reach toward the ball were obtained using a motion analysis system. Infants, like adults, reached for the ball faster if they were going to subsequently throw it as opposed to using it in the precision action. The perceptual aspects of the ball were the same and cannot account for these kinematic differences. Infants appear to be planning both segments of their actions in advance. Our findings provide evidence for a level of sophistication in infant motor planning not reported before.