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首页> 外文期刊>Journal of speech, language, and hearing research: JSLHR >Laryngeal Constriction Phenomena in Infant Vocalizations
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Laryngeal Constriction Phenomena in Infant Vocalizations

机译：婴儿发声中的喉部收缩现象

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Purpose: Instances of laryngeal constriction have been noted as a feature of infant vocal development. The purpose of this study was to directly evaluate the developmental occurrence of laryngeal constriction phenomena in infant crying, cooing, and babbling vocalizations. Method: The cry and noncry vocalizations of 20 healthy term-born infants between the ages of 1 and 7 months were examined for instances of laryngeal constriction. Approximately 20,000 vocalization samples were acoustically evaluated, applying a combined visual (frequency spectra and melody curves) and auditory analysis; the occurrence of instances of different constriction phenomena was analyzed. Results: Laryngeal constrictions were found during the production of cry and noncry vocalizations. The developmental pattern of constrictions for both vocalizations was characterized by an increase in constrictions followed by a decrease. During the age period of 3-5 months, when cry and noncry vocalizations were co-occurring, laryngeal constrictions were observed in 14%-22% of both types of vocalizations. An equal percentage of constrictions was found for both vocalizations at 5 months of age. Conclusions: The findings confirm that the production of laryngeal constriction is a regularly occurring phenomenon in healthy, normally developing infants' spontaneous crying, cooing, and marginal babbling. The occurrence of constriction in both cry and noncry vocalizations suggests that an infant is exploiting physiological constraints of the sound-generating system for articulatory development during vocal exploration. These results lend support to the notion that the laryngeal articulator is the principal articulator that infants 1 st start to control as they test and practice their phonetic production skills from birth through the 1st several months of life.
机译：目的：喉咙收缩的情况已被指出作为婴儿声乐发展的特征。本研究的目的是直接评估婴儿哭泣，共轭和潺潺声发声中的喉部收缩现象的发育发生。方法：对喉部收缩的实例检查了1岁和7个月之间的20岁的健康术语出生的婴儿的哭泣和非折衷发声。声学评估大约20,000个发声样本，施加组合的视觉（频谱和旋律曲线）和听觉分析;分析了不同收缩现象的情况的发生。结果：在生产哭泣和非折磨声学期间发现了喉部收缩。两个发声的收缩的发育模式的特征在于收缩的增加，然后减少。在3-5个月的年龄期间，当哭泣和非肆虐的发声共同发生时，喉部收缩被观察到两种类型的发声中的14％-22％。在5个月的年龄的发声中发现了平等的收缩百分比。结论：调查结果证实，喉部收缩的生产是健康，通常发育婴儿的自发哭泣，阳性和边缘唠叨的经常发生的现象。哭泣和非频繁发声中的收缩的发生表明，婴儿正在利用声乐勘探期间阐明发射系统的生理限制。这些结果对喉头铰接器是婴儿1 ST开始控制的主要关节器的概念来支持，因为他们通过诞生的1个月的出生来试验并练习他们的语音生产技能。

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