A longitudinal study of prospective control in catching by full-term and preterm infants
A longitudinal study of prospective control in catching by full-term and preterm infants
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DOI：
10.1007/s00221-008-1692-2
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发表时间：
2009-04-01
影响因子：
2
通讯作者：
Van der Meer, Audrey L. H.
中科院分区：
文献类型：
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作者：
Kayed, Nanna Sonnichsen;Van der Meer, Audrey L. H.
前瞻性控制时，捕捉移动的玩具进行了纵向研究，在足月和早产儿之间的年龄为22至48周。玩具的距离和时间的捕捉的地方和它的速度进行了探讨，作为可能的时机策略，婴儿开始他们的手运动。该研究的目的是寻找时机策略转变的证据，以及足月儿和早产儿之间是否存在差异。此外，本研究还探讨了婴儿如何持续地引导他们的手到玩具上，以及这种引导是否受到他们使用时间策略的影响。玩具以不同的恒定速度和恒定加速度从侧面接近婴儿。结果表明，足月儿和早产儿在时间策略的使用上差异不大。最初，婴儿使用距离或速度策略，可能导致他们有许多不成功的捕获。在转变为时间策略后，婴儿似乎增加了成功接球的次数，并在手和玩具之间进行了更长时间和更功能性的tau耦合。一名早产儿没有切换到时间策略，并经常错过移动的玩具。同一个婴儿也表现出较少的功能性tau耦合与手和玩具之间的非控制碰撞。需要更多的后续研究，以调查是否提取相关的知觉信息的行动可能是一个早期的迹象，后来的知觉运动困难。
Prospective control when catching moving toys was studied longitudinally in full-term and preterm infants between the ages of 22 and 48 weeks. The toy's distance and time to the catching place and its velocity were explored as possible timing strategies used by infants to start their hand movement. The aim of the study was to find evidence for a shift in timing strategy and whether there were differences between full-term and preterm infants. In addition, it was investigated how infants continuously guided their hands to the toy and whether this guidance was influenced by their use of timing strategy. The toy approached the infants from the side with different constant velocities and constant accelerations. Results showed that there was little difference between full-term and preterm infants' use of timing strategies. Initially, infants used a distance- or velocity-strategy, possibly causing them to have many unsuccessful catches. After a shift to a time-strategy, infants appeared to increase the number of successful catches and performed longer and more functional tau-couplings between the hand and the toy. One preterm infant did not switch to a time-strategy, and frequently missed the moving toy. The same infant also showed less functional tau-coupling with non-controlled collisions between the hand and the toy. More follow-up research is needed to investigate whether problems with extracting the relevant perceptual information for action could be an early indication of later perceptuo-motor difficulties.