Non-nutritive suck and voice onset time: Examining infant oromotor coordination.
Non-nutritive suck and voice onset time: Examining infant oromotor coordination.
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DOI：
10.1371/journal.pone.0250529
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发表时间：
2021
期刊：
影响因子：
3.7
通讯作者：
Zimmerman E
中科院分区：
文献类型：
--
作者：
Heller Murray E;Lewis J;Zimmerman E
当孩子学习协调上声道和喉部发音姿势时，他们的发声时间（VOT）的变异性在发育过程中会减少。然而，人们对 VOT 和其他早期运动任务之间的关系知之甚少。本研究的目的是评估婴儿发声与另一种早期口腔运动任务——非营养性吸吮（NNS）之间的关系。 25 名足月婴儿（11 名男性，14 名女性）完成了这项研究。在 3 个月时使用定制的奶嘴测量 NNS，以评估这种早期反射。使用语言环境分析设备收集 12 个月大婴儿的平均 VOT 和 VOT 变异性（通过变异系数测量）的测量值。 12 个月时的 VOT 变异性与 3 个月时的 NNS 测量值显着相关。 VOT 变异性的增加主要是由于 NNS 突发频率的增加和 NNS 突发持续时间的增加造成的。平均 VOT 或 VOT 范围与 NNS 测量之间没有关系。这项试点研究的结果表明，NNS 测量的突发频率和突发持续时间与 VOT 变异性之间存在关系。 NNS 内爆发频率和 NNS 爆发持续时间增加的婴儿 VOT 变异性增加，表明 VOT 和 NNS 在生命第一年的发展之间存在关系。未来的工作需要继续检查这些早期口腔运动动作之间的关系，并评估这如何影响以后的言语发展。
The variability of a child’s voice onset time (VOT) decreases during development as they learn to coordinate upper vocal tract and laryngeal articulatory gestures. Yet, little is known about the relationship between VOT and other early motor tasks. The aims of this study were to evaluate the relationship between infant vocalization and another early oromotor task, non-nutritive suck (NNS). Twenty-five full-term infants (11 male, 14 female) completed this study. NNS was measured with a customized pacifier at 3 months to evaluate this early reflex. Measures of mean VOT and variability of VOT (measured via coefficient of variation) were collected from 12-month-old infants using a Language Environmental Analysis device. Variability of VOTs at 12 months was significantly related to NNS measures at 3-months. Increased VOT variability was primarily driven by increased NNS intraburst frequency and increased NNS burst duration. There were no relationships between average VOT or range of VOT and NNS measures. Findings from this pilot study indicate a relationship between NNS measures of intraburst frequency and burst duration and VOT variability. Infants with increased NNS intraburst frequency and NNS burst duration had increased VOT variability, suggesting a relationship between the development of VOT and NNS in the first year of life. Future work is needed to continue to examine the relationship between these early oromotor actions and to evaluate how this may impact later speech development.
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