COARTICULATION IN DYSARTHRIA

描述：协同发音在神经病学中得到了广泛的研究。 正常说话人和正常人物在正常言语理论中的突出地位 制作。就协同发音可能会有类似的地位而言 在对构音障碍的言语产生理论上，有了基本的认识 协同发音对于阐述这样的理论、研究是必不可少的 研究构音障碍的协同发音似乎是理所当然的。有这样的想法 协同发音影响对精确度的知觉印象进一步表明 对构音障碍的协同发音模式的研究可能表明 可在治疗中靶向改善的发音特征 精确度。目前的项目旨在研究预期的协同发音 肌萎缩侧索硬化症(ALS)、帕金森病(PD)和 多发性硬化症(MS)，从声学信号推断。神经学上 为了进行比较，将对健康的说话者进行研究。这个 知觉-声学理论(PAT)，一种正常言语产生理论， 将被用作研究预期协同发音的起点 帕金森病、肌萎缩侧索硬化症和多发性硬化症的具体预测 将测试神经学演讲者的预期协同发音能力。的一个目标 这个项目是为了描述典型的或典型的或 肌萎缩侧索硬化症、多发性硬化症和帕金森病患者的习惯性言语。第二个目标是 确定两种治疗技术的效果--降低发音率 和更高的发声强度--关于ALS、MS和 警察。第三个目标是记录知觉印象之间的关系 精确度和协同发音。第二共振峰(F2)频率值，第一 将使用矩系数和辅音F2度量来推断 协同发音。精度的比例估计也将与选择 协同发音的声学测量。

DESCRIPTION: Coarticulation has been studied extensively in neurologically normal speakers and figures prominently in theories of normal speech production. In so far as coarticulation presumably would have a similar status in a speech production theory of dysarthria, and a basic understanding of coarticulation is essential for elaborating such a theory, research investigating coarticulation in dysarthria appears warranted. The idea that coarticulation influences perceptual impressions of precision further indicates that studies investigating coarticulatory patterns in dysarthria may suggest articulatory characteristics that could be targeted in therapy to improve precision. The current project aims to study anticipatory coarticulation for speakers with Amyotrophic Lateral Sclerosis (ALS), Parkinson disease (PD), and Multiple Sclerosis (MS), as inferred from the acoustic signal. Neurologically healthy speakers will be studied for comparison purposes. The Perceptual-Acoustic Theory (PAT), a theory of normal speech production theory, will be used as a starting point for studying anticipatory coarticulation in PD, ALS, and MS. Specific predictions that the PAT suggests concerning anticipatory coarticulation for neurologic speakers will be tested. One goal of the project is to characterize anticipatory coarticulation for the typical or habitual speech of individuals with ALS, MS, and PD. A second goal is to determine the effects of two treatment techniques - slowed articulatory rate and increased vocal intensity- on anticipatory coarticulation in ALS, MS, and PD. A third goal is to document the relationship between perceptual impressions of precision and coarticulation. Second formant (F2) frequency values, first moment coefficients, and consonant F2 measures will be used to infer coarticulation. Scaled estimates of precision also will be related to select acoustic measures of coarticulation.