F2 transitions during sound/syllable repetitions of children who stutter and predictions of stuttering chronicity.
F2 transitions during sound/syllable repetitions of children who stutter and predictions of stuttering chronicity.
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口吃儿童的声音/音节重复期间的 F2 转换以及口吃长期性的预测。
DOI：
10.1044/jshr.3605.883
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Conture,EG
中科院分区：
文献类型：
--
作者：
Yaruss,JS;Conture,EG
本研究旨在探讨口吃儿童语音/音节重复（SSR）过程中的第二共振峰（F2）转换与口吃慢性化的关系。受试者是13名患有口吃的青少年，根据口吃预测工具（SPI; Riley，1984）测量的口吃预测慢性程度将他们分为两组：高风险组，由7名男孩组成。(mean年龄=50.6个月）和低风险组，包括5名男孩和1名女孩（平均年龄=48.5个月）。每个孩子在与他或她的母亲进行30分钟的对话互动期间都被录音/录像。对每个孩子的10个SSR进行了声学分析，以识别单词的重复（口吃）和流利（不口吃）部分之间F2转换的差异。目前的研究结果与Stromsta（1965，1986）的研究结果一致，Stromsta报告说，口吃儿童在口吃期间产生的F2转换是不可测量的或缺失的，或者在运动方向上与流畅的转换不同。然而，这些“异常”F2转换的发生频率在组间没有显著差异，这一发现显然与Stromsta的结果不一致。其余可测量的F2转换显示，在开始和偏移频率、转换程度和转换率方面，口吃和流利F2转换之间的平均差异无显著组间差异。在这两个组中，除了过渡时间外，所有声学测量的口吃和流利的F2过渡之间均存在显着的正相关性，而过渡时间与高风险或低风险受试者均无显着相关性。在低风险组中，口吃的F2过渡通常比流畅的过渡短。研究结果表明，一些元素的声音或段的延长可能存在于儿童的SSR口吃和谁被认为是在高风险的继续口吃，表明在口吃期间的F2转换的选定方面的进一步研究可能提供有用的临床信息预测的可能性，一个孩子将继续口吃。
The purpose of the present study was to examine the relationships between second formant (F2) transitions during the sound/syllable repetitions (SSRs) of young children who stutter and their predicted chronicity of stuttering. Subjects were 13 youngsters who stutter, who were divided into two groups based on their predicted chronicity of stuttering as measured by the Stuttering Prediction Instrument (SPI; Riley, 1984): a high-risk group, consisting of 7 boys. (mean age=50.6 months), and a low-risk group, consisting of 5 boys and 1 girl (mean age=48.5 months). Each child was audio/videotape-recorded during a 30-minute conversational interaction with his or her mother. Ten SSRs per child were acoustically analyzed to identify differences in F2 transitions between the repeated (stuttered) and fluent (nonstuttered) portions of the words. Present findings are consistent with those of Stromsta (1965, 1986), who reported that children who stutter produce F2 transitions during stuttering that are nonmeasurable or missing or that differ in direction of movement from fluent transitions. However, there were no significant between-group differences in the frequency of occurrence of these "abnormal" F2 transitions, findings that are apparently inconsistent with Stromsta’s results. The remaining measurable F2 transitions showed no significant between-group differences in the mean differences between stuttered and fluent F2 transitions for onset and offset frequencies, transition extents, and transition rates. Within both groups, significant positive correlations were found between stuttered and fluent F2 transitions for all acoustic measures except for transition durations, which were not significantly correlated for either high-risk or low-risk subjects. Within the low-risk group, stuttered F2 transitions were typically shorter than fluent transitions. Findings were taken to suggest that some elements of sound or segment prolongation may be present within the SSRs of children who stutter and who are considered to be at high risk for continuing to stutter, indicating that further study of selected aspects of F2 transitions during stuttering may provide useful clinical information for predicting the likelihood that a child will continue to stutter.
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DOI：
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期刊：
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