Preston Jonathan L, Maas Edwin, Whittle Jessica, Leece Megan C, McCabe Patricia
a Department of Communication Sciences & Disorders , Syracuse University , Syracuse , NY , USA.
b Haskins Laboratories , New Haven , CT , USA.
Clin Linguist Phon. 2016;30(3-5):363-81. doi: 10.3109/02699206.2015.1052563. Epub 2015 Aug 3.
Ultrasound visual feedback of the tongue is one treatment option for individuals with persisting speech sound errors. This study evaluated children's performance during acquisition and generalisation of American English rhotics using ultrasound feedback. Three children aged 10-13 with persisting speech sound errors associated with childhood apraxia of speech (CAS) were treated for 14 one-hour sessions. Two of the participants increased the accuracy of their rhotic production during practise trials within treatment sessions, but none demonstrated generalisation to untreated words. Lack of generalisation may be due to a failure to acquire the target with sufficient accuracy during treatment, or to co-existing linguistic weaknesses that are not addressed in a motor-based treatment. Results suggest a need to refine the intervention procedures for CAS and/or a need to identify appropriate candidates for intervention to optimise learning.
舌头的超声视觉反馈是针对存在持续语音错误的个体的一种治疗选择。本研究评估了儿童在使用超声反馈习得和泛化美式英语卷舌音时的表现。三名年龄在10至13岁、存在与儿童言语失用症（CAS）相关的持续语音错误的儿童接受了为期14次、每次一小时的治疗。两名参与者在治疗过程中的练习试验中提高了卷舌音发音的准确性，但没有人能将其泛化到未治疗的单词上。泛化失败可能是由于在治疗期间未能以足够的准确性习得目标，或者是由于存在基于运动的治疗中未解决的并存语言弱点。结果表明需要完善CAS的干预程序和/或需要确定合适的干预候选人以优化学习。
