Ultrasound biofeedback sample videos and practice data (Preston et al., 2017)

The purpose of this study was to evaluate the role of practice variability, through prosodic variation during speech sound training, in biofeedback treatment for children with childhood apraxia of speech. It was hypothesized that variable practice would facilitate speech sound learning.Supplemental Material S1. Sample video of prepractice. Prepractice included verbal and visual instruction to help the participant understand what was required for a correct production of the target movements.Supplemental Material S2. Sample video of the no prosody practice condition with ultrasound visual feedback. In this condition, the structured practice followed the same progression but with no intentional manipulation of prosody. The target words were modeled with a neutral tone so as not to draw the participants’ attention to prosody.Supplemental Material S3. Sample video of the prosody practice condtion with ultrasound visual feedback. In this condition, participants were told that they were going to practice the target utterances with different prosodic cues or “voices.”Supplemental Material S4. Individual within-session practice trial data in two treatment conditions. For each session, 20 min were spent on prepractice and practice of each treatment target (10 min with the ultrasound and 10 min without). As described above, participants transitioned from prepractice to practice only when the preestablished criteria were met.Preston, J. L., Leece, M. C., McNamara, K., & Maas, E. (2017). Variable practice to enhance speech learning in ultrasound biofeedback treatment for childhood apraxia of speech: A single case experimental study. American Journal of Speech-Language Pathology, 26, 840–852. https://doi.org/10.1044/2017_AJSLP-16-0155

本研究旨在评估通过语音音素训练中的韵律变化所导致的实践变异性在儿童构音障碍生物反馈治疗中的作用。研究者假设，变化的实践将有助于语音音素的学习。补充材料S1：训练前样本视频。训练前包括口头和视觉指导，以帮助参与者理解正确执行目标动作所需的内容。补充材料S2：无韵律实践条件下的超声视觉反馈样本视频。在此条件下，结构化的实践遵循相同的进程，但未进行有意的韵律操纵。目标词汇以中性音调呈现，以免引起参与者的韵律注意。补充材料S3：韵律实践条件下的超声视觉反馈样本视频。在此条件下，参与者被告知他们将使用不同的韵律提示或“声音”来练习目标语调。补充材料S4：两个治疗条件下的单个会话实践试验数据。对于每个会话，均花费20分钟进行训练前的准备和实践每个治疗目标（使用超声的10分钟和未使用超声的10分钟）。如上所述，只有当达到预先设定的标准时，参与者才会从训练前的准备过渡到实践。Preston, J. L., Leece, M. C., McNamara, K., & Maas, E. (2017). 变化实践以增强超声生物反馈治疗儿童构音障碍中的语音学习：一项单案例实验研究。美国言语-语言病理学杂志，26，840–852. https://doi.org/10.1044/2017_AJSLP-16-0155