Retroflex Versus Bunched in Treatment for Rhotic Misarticulation: Evidence From Ultrasound Biofeedback Intervention
Retroflex Versus Bunched in Treatment for Rhotic Misarticulation: Evidence From Ultrasound Biofeedback Intervention
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DOI：
10.1044/2014_jslhr-s-14-0034
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发表时间：
2014-12-01
影响因子：
2.6
通讯作者：
Swartz, Michelle T.
中科院分区：
文献类型：
--
作者：
Byun, Tara McAllister;Hitchcock, Elaine R.;Swartz, Michelle T.
目的：记录超声生物反馈治疗儿童北美英语发音错误的疗效。由于第一组的进展有限，因此进行了一系列两项密切相关的研究来代替一项研究。这些研究的不同之处主要在于治疗过程中提示的舌形目标（例如，卷舌、束状）的性质。方法：八名参与者接受了为期 8 周的针对舌旋症的单独超声生物反馈治疗。在研究 1 中，所有 4 名参与者都被提示匹配一个束状舌头形状的目标。在研究 2 中，参与者接受了个性化提示，旨在引出最有利于感知正确舌音的舌头形状。结果：研究 1 中的参与者仅表现出最小的治疗效果。在研究 2 中，所有参与者都表现出在没有生物反馈的情况下产生的未经处理的单词的产生有所改善，效果大小从大到非常大。结论：研究 2 的结果表明，通过适当的治疗参数，超声生物反馈可以成为对患有持续性发音错误的儿童的高效干预措施。此外，研究 1 和研究 2 的定性比较表明，北美英语舌音的治疗应包括探索不同舌头形状的机会，以找到对每个说话者最有帮助的变体。
Purpose: To document the efficacy of ultrasound biofeedback treatment for misarticulation of the North American English rhotic in children. Because of limited progress in the first cohort, a series of two closely related studies was conducted in place of a single study. The studies differed primarily in the nature of tongue-shape targets (e.g., retroflex, bunched) cued during treatment.Method: Eight participants received 8 weeks of individual ultrasound biofeedback treatment targeting rhotics. In Study 1, all 4 participants were cued to match a bunched tongue-shape target. In Study 2, participants received individualized cues aimed at eliciting the tongue shape most facilitative of perceptually correct rhotics.Results: Participants in Study 1 showed only minimal treatment effects. In Study 2, all participants demonstrated improved production of rhotics in untreated words produced without biofeedback, with large to very large effect sizes.Conclusions: The results of Study 2 indicate that with proper parameters of treatment, ultrasound biofeedback can be a highly effective intervention for children with persistent rhotic errors. In addition, qualitative comparison of Studies 1 and 2 suggests that treatment for the North American English rhotic should include opportunities to explore different tongue shapes, to find the most facilitative variant for each individual speaker.