Jaw stretch reflexes in children.
Jaw stretch reflexes in children.
复制标题
儿童下颌牵张反射。
DOI：
10.1007/s00221-005-2217-x
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发表时间：
2005
影响因子：
2
通讯作者：
Smith,Anne
中科院分区：
文献类型：
--
作者：
Finan,DonaldS;Smith,Anne
人类发育过程中发生的实质性形态转变给神经系统在运动控制方面带来了相当大的挑战。熟练运动表现的可变性是发育系统的标志。在成人中，下颌拉伸反射有助于下颌的功能稳定性。我们研究了两组幼儿和一组年轻人的下颌伸展反射的反应特性。反应潜伏期随着发育而增加，所有年龄段的反射增益和咬合力都会产生刺激强度依赖性的增加。年龄较大的儿童（9-10 岁）的反射增益最大，但咬合力的净增加在各个年龄组中是相当的。这些数据和早期实验表明，口腔感觉运动通路在整个童年时期随着复杂运动技能的持续获得而成熟。
The substantial morphological transformations that occur during human development present the nervous system with a considerable challenge in terms of motor control. Variability of skilled motor performance is a hallmark of a developing system. In adults, the jaw stretch reflex contributes to the functional stability of the jaw. We have investigated the response properties of the jaw stretch reflex in two groups of young children and a group of young adults. Response latencies increased with development, and all age groups produced stimulus-magnitude-dependent increases in reflex gain and resulting biting force. Reflex gain was largest for the older children (9–10 years), yet net increases in resulting biting force were comparable across age groups. These data and earlier experiments suggest that oral sensorimotor pathways mature throughout childhood in concert with the continued acquisition of complex motor skills.