SPEECH MOTOR PROCESSES--AGE RELATED CHANGES

描述：(改编自《调查员S摘要》)：目前 缺乏对言语运动发育的连贯描述。这构成了一个 主要障碍是我们评估汽车潜在影响的努力 在言语障碍的发展方面存在缺陷。如果正常的进程 言语运动发育未知，非典型发育模式不能 被指认出来。使用最新可用的技术， 目前的项目是实施多层次和综合的方法来 语言运动发育的问题。言语与基本口腔运动 功能将通过多个分析窗口进行评估，包括 直接记录语音运动，测量语音声学事件， 评估口腔运动反射和颅面解剖指数。一个 该项目的长期目标是获得成熟的 语音、解剖学和反射测量基于对大量 受试者从4岁到青壮年。使用这种方法，可以使成熟度 口腔运动系统的组成部分可以被绘制出来。条件反射和 解剖学测量提供了生物底物的索引， 言语运动过程必须出现。我们将能够确定时间 成人值与言语相关变量的成熟度 反映基本的口腔生理学。这些增长曲线的轨迹 将被用来检验关于因素动态相互作用的假设 与言语运动技能的习得有关。此外，还有一套 对4至12岁的较小年龄组受试者的研究将提供更精细的 语音运动组织的粒度分析。这些研究是 旨在检验幼儿不仅仅是个头较小的假设， 技能较低的表演者使用与成年人相同的组织策略。 相反，孩子们正在使用独特的策略，反映出不同的 他们带给说话任务的生物工具。

DESCRIPTION: (Adapted From The Investigator s Abstract): At present a coherent account of speech motor development is lacking. This constitutes a major roadblock to our efforts to assess the potential impact of motor deficits on the development of speech disorders. If the normal course of speech motor development is unknown, atypical developmental patterns cannot be identified. Using newly available technologies, the overall goal of the present project is to implement a multi-leveled and integrative approach to the problem of speech motor development. Speech and basic oral motor functions will be assessed through multiple analytic windows, including direct recording of speech movements, measurement of speech acoustic events, assessment of oral-motor reflexes, and indices of craniofacial anatomy. A long-term objective of this project is to obtain maturational profiles of speech, anatomical, and reflex measures based on tests of large numbers of subjects aged 4 yrs to young adult. Using this method, the maturation of components of the oral motor system can be mapped out. The reflex and anatomic measures provide indices of the biological substrate from which speech motor processes must emerge. We will be able to determine the time of maturation to adult values of both speech-related variables and those reflecting basic oral physiology. The trajectories of these growth curves will be used to test hypotheses about the dynamic interactions of factors related to the acquisition of speech motor skills. In addition, a set of studies of smaller groups of subjects aged 4 to 12 yrs will provide finer grained analyses of speech movement organization. These studies are designed to test the hypothesis that young children are not simply smaller, less skilled performers using the same organizational strategies as adults. Rather children are using distinctive strategies that reflect the different biological tools that they bring to the task of speaking.