Developmental changes in the effects of utterance length and complexity on speech movement variability.
Developmental changes in the effects of utterance length and complexity on speech movement variability.
复制标题
话语长度和复杂性对言语运动变异性影响的发展变化。
DOI：
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复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Anne Smith
中科院分区：
文献类型：
--
作者：
Neeraja Sadagopan;Anne Smith
目的
作者研究了话语长度和语言复杂性对210名年龄在5岁到22岁之间的参与者的言语运动一致性的影响。变异性和持续时间的分析进行，以（a）确定一个更完整的图片的发展过程中的早期观察的语言结构对言语运动变异性的影响和（B）描述的趋势，在不同的连续性的上下文中相同的单词序列的持续时间在整个发展。
方法
在制作“给鲍比买一只小狗”的过程中，记录了下唇的运动，该动作是单独说出的，并作为一个短语嵌入到两个更长、更复杂的句子中。
结果
与年轻人相比，儿童在所有条件下为目标词序列产生重复运动序列的变异性更高。此外，对于除年轻人以外的所有年龄组，增加的处理需求导致运动轨迹变异性显著增加。持续时间分析表明，在9岁左右，儿童开始使用类似成人的言语前过程来计划句子内部短语的时间，这些计划过程的成熟持续到青春期后期。
结论
这些结果提供了进一步的证据，语言运动的相互作用和言语运动的发展，持续到青春期的一个漫长的过程。
PURPOSE
The authors examined the effects of utterance length and linguistic complexity on speech movement consistency for 210 participants between the ages of 5 and 22 years. Variability and durational analyses were conducted to (a) determine a more complete picture of the developmental course of earlier observations of the effects of linguistic constructs on speech motor variability and (b) describe trends for duration of the same sequence of words in different sentential contexts across development.
METHOD
Lower-lip movement was recorded during the production of "buy Bobby a puppy" spoken in isolation as well as embedded as a phrase in 2 longer, more complex sentences.
RESULTS
Compared with young adults, children demonstrated higher variability in producing repeated movement sequences for the target word sequence across all conditions. Also, for all age groups except young adults, increased processing demands resulted in significantly increased movement trajectory variability. Duration analyses suggest that around age 9 years, children begin to use adult-like pre-speech processes to plan the timing of sentence internal phrases, and maturation of these planning processes continues through late adolescence.
CONCLUSION
These results provide further evidence for language-motor interactions and for a protracted course of speech motor development that continues well into adolescence.
青少年的发音运动：言语运动控制过程长期发展的证据。
DOI：
10.1044/1092-4388(2002/090
发表时间：
2002
期刊：
Journal of speech, language, and hearing research : JSLHR
影响因子：
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作者：
Walsh,Bridget;Smith,Anne
通讯作者：
Smith,Anne
影响因子：
2.2
作者：
Smith, A;Zelaznik, HN
通讯作者：
Zelaznik, HN
影响因子：
2.6
作者：
Kleinow, J;Smith, A
通讯作者：
Smith, A