Associations between developmental trajectories of movement variety and visual attention in fullterm and preterm infants during the first six months postterm
Associations between developmental trajectories of movement variety and visual attention in fullterm and preterm infants during the first six months postterm
复制标题
DOI：
10.1016/j.earlhumdev.2014.12.006
复制
发表时间：
2015-01-01
影响因子：
2.5
通讯作者：
Geuze, Reint H.
中科院分区：
文献类型：
--
作者：
Hitzert, Marrit M.;van Geert, Paul L. C.;Geuze, Reint H.
背景：在婴儿期早期，主要的发展变化，无论是在身体动作的变化上还是在视觉注意上，都有助于婴儿探索周围的环境。这两种行为都依赖于从皮质下功能到皮质功能的逐渐转变。目的：首先，确定早产是否比全产更早达到运动多样性(不同运动模式的数量)和视觉注意的成熟水平。第二，确定个体运动变化和视觉注意的发展轨迹是否相关。最后，我们比较了足月儿和早产儿之间的发展轨迹的相关性。研究设计：在这项纵向研究中，20名足月儿和9名低风险早产儿在6周至6个月后每4周进行一次视觉脱离任务。我们为每个婴儿绘制了动作变化、眼神频率和潜伏期的发展轨迹。结果：与足月儿相比，早产儿的运动变化随时间的增加而增加(F(4,108)=0.27；部分ETA(2)=0.01；P=.90)。视觉注意力比动作变化早四周达到成熟水平。这种影响在足月婴儿中更强。无论是足月儿还是早产儿，我们都没有发现运动变化的发展轨迹与视觉注意之间的联系。P值范围为0.37~0.99。结论：在足月后的前6个月内，运动变化和视觉注意独立发展。暂时地，早产暴露于宫外环境会导致外貌潜伏期缩短，但这并不影响外貌频率和动作变化的发育轨迹。(C)爱思唯尔爱尔兰有限公司出版的2015年。
Background: During early infancy major developmental changes, both in the variety of body movements and in visual attention, help the infant to explore its surroundings. Both behaviours depend on a gradual shift from subcortical to cortical functioning.Aims: First, to determine whether preterms reach mature levels of movement variety (the number of different movement patterns) and visual attention earlier than fullterms. Second, to determine whether individual developmental trajectories of movement variety and visual attention were associated. Finally, we compared the associations of developmental trajectories between fullterm and preterm infants.Study design: In this longitudinal study, 20 fullterm and 9 low-risk preterm infants performed a visual disengagement task every four weeks from six weeks until six months postterm. For each infant we drew up developmental trajectories for movement variety, and for frequencies and latencies of looks. We analyzed the developmental trajectories by means of general linear model (GLM) repeated measures and Monte Carlo analyses.Results: In comparison to fullterms, preterm infants showed a similar increase in movement variety over time (F(4,108) = 0.27; partial eta(2) = 0.01; P = .90). Visual attention reached mature levels four weeks earlier than movement variety. This effect was stronger in fullterm infants. Neither in fullterm nor in preterm infants did we find an association between the developmental trajectories of movement variety and visual attention. P values ranged from .37 to .99.Conclusions: During the first 6 months postterm, movement variety and visual attention developed independently. Temporarily, preterm exposure to the extrauterine environment led to shorter latencies of looks but it did not affect developmental trajectories of frequencies of looks and movement variety. (C) 2015 Published by Elsevier Ireland Ltd.