Sensori-motor development of speech: feedback perturbations

我的研究项目的首要长期目标是调查儿童言语产生-感知关系的发展。在过去的五十年里，人们一直声称，多个来源的感觉反馈用于监测语音发音，其中最重要的是听觉反馈。从发展的角度来看，听觉反馈对于获得与元音和辅音相关的适当发音位置至关重要。虽然许多研究都是关于反馈在言语产生中的作用，但没有一项研究使用发音运动，声学参数和感知测量的原始数据来解决儿童的这个问题。在接下来的五年里，我的研究计划的全球目标是研究听觉反馈在言语产生中的作用，在学龄前和学龄儿童的感觉扰动范式。为此，本建议的三个具体目标是：（a）研究与所产生的元音类别相关的感知听觉敏锐度的发展，（B）研究儿童和成人用于适应元音类别内和跨元音类别的听觉反馈变化的发音和声学策略，以及（c）确定哪些适应策略与感知最相关。为了实现这些目标，我们建议，使运动学和声学记录的语音序列产生的典型发展中国家的儿童和成人。还将进行感知测试，并将结果与产生的数据进行比较。这项研究计划的创新性主要在于解决的问题：虽然感官知觉对语音发展的影响一直是许多研究的主题，没有一个集中在一个综合的发音和声学分析的策略，以补偿改变听觉反馈，考虑到个人的全球元音空间。此外，我们提出的方法，结合红外运动捕捉和超声成像，是独一无二的。我们的研究计划将导致语言感觉运动发展领域的突破性进展，并将有助于创新技术工具的开发。事实上，通过提供关于儿童声音类别和言语感知相互作用的原始数据，我们的计划将使我们能够巩固和扩大与声乐技术公司的合作，以开发旨在改善第二语言学习的虚拟生长说话头。我们拟议的研究计划还将创造一个有利于培养口语处理领域高素质人才（本科生、研究生和博士后研究员）的研究环境。

The overarching long-term objective of my research program is to investigate the development of speech production-perception relationships in children. In the last five decades, it has been claimed that multiple sources of sensory feedback are used to monitor the speech articulators, the most important of which is auditory feedback. From a developmental perspective, auditory feedback is crucial to acquire the appropriate articulatory positions related to vowels and consonants. Although many studies have been conducted on the role of feedback in speech production, none has addressed this issue in children, using original data on articulatory movements, acoustic parameters, and perceptual measures.***For the next five years, the global objective of my research program is to study the role of auditory feedback in speech production using the sensory perturbation paradigm in preschool- and school-aged children. To this end, the three specific objectives of this proposal are (a) to study the development of perceptual auditory acuity in relation with the produced vowel categories, (b) to study the articulatory and acoustic strategies children and adults use to adapt to altered auditory feedback within and across vowel categories, and (c) to determine which adaptation strategies are the most perceptually relevant. To achieve these objectives, we propose to make kinematic and acoustic recordings of speech sequences produced by typically developing children and by adults. Perceptual tests will also be conducted and the results will be compared to the produced data.***The innovative nature of this research program resides primarily in the problem addressed: while the impact of sensory perception on the development of speech has been the subject of numerous studies, none has focused on an integrated articulatory and acoustic analysis of strategies to compensate for altered auditory feedback, taking into account the individual's global vowel space. Furthermore, our proposed method, combining infrared motion capture and ultrasound imaging, is unique. Our research program will lead to groundbreaking advances in the area of sensorimotor development in speech, and will contribute to the development of innovative technological tools. Indeed, by providing original data on the interaction of sound categories and speech perception in children, our program will allow us to consolidate and expand our collaborations with vocal technology companies to develop virtual growing talking heads designed to improve second language learning. Our proposed research program will also create a research environment conducive to the training of highly qualified personnel (undergraduate and graduate students and postdoctoral fellows) in the area of oral language processing.**