在有或没有言语声音障碍的儿童中,舌头形状的复杂性
Marie Dokovova1, Ellie Sugden2, Gemma Cartney3
1School of Psychological Sciences and Health, University of Strathclyde, Glasgow, United Kingdom.
概括
年龄较小的儿童和有语音障碍的儿童使用更简单的舌头形状,表明运动控制有挑战. 随着孩子的年龄的增长,舌头形状的复杂性增加,特别是在典型的发育个体.
科学领域:
- 语音语言病理学 语言病理学
- 语言学的语言学.
- 发育儿科 发育儿科
背景情况:
- 患有语音音障碍 (SSD) 的儿童经常表现出运动控制方面的困难.
- 语言运动控制对于产生复杂的语音声音至关重要.
- 了解舌头运动模式可以阐明发言生产中的发育轨迹.
研究的目的:
- 为了调查年幼的孩子和那些有更严重的语音障碍 (SSD) 的人是否使用更简单的舌头手势.
- 探索SSD和没有SSD的儿童的年龄,语音精度和舌头形状复杂性之间的关系.
- 为了确定语言运动控制的局限性是否有助于语音声音错误.
主要方法:
- 从SSD的儿童和典型的发育同龄人的超声数据的横截面分析.
- 使用INFLections数 (NINFL) 和修改曲率指数 (MCI) 测量舌头形状复杂性.
- 在语音间环境中分析语音产生的声音 (/a/, /t/, /ɹ/, /l/, /s/, /ʃ/),考虑到年龄和感知准确度.
主要成果:
- 与典型发育的儿童相比,SSD的儿童随着年龄的增加显示出更低的修改曲率指数 (MCI).
- 对于典型发育的儿童来说,年龄的增加也与MCI的减少相关.
- 在SSD儿童中,感知上不正确的/ɹ/产品的MCI比正确的产品更低.
结论:
- 在SSD和没有SSD的儿童之间存在着舌头形状复杂性的系统差异,特别是在考虑年龄时.
- 增加年龄和不正确的辅音制作与SSD儿童的舌头形状复杂性减少有关.
- 研究结果表明,语言运动控制的成熟影响了语音的发育和复杂性.
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