COARTICULATION IN DYSARTHRIA

描述：协同发音已在神经学领域得到广泛研究 正常说话者和正常言语理论中的重要人物 生产就协同发音而言， 在构音障碍的言语产生理论中， 协同构音是阐述这一理论、研究 研究构音障碍的协同发音似乎是有必要的。的想法 协同发音影响精确度的知觉印象，进一步表明 研究构音障碍的共同发音模式可能表明， 可以在治疗中针对性地改善发音特征， 精度本项目旨在研究预期协同发音， 肌萎缩侧索硬化症（ALS），帕金森病（PD）， 多发性硬化症（MS），从声学信号推断。神经学 健康的说话者会被研究作比较。的 感知声学理论（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， PD、ALS和MS。PAT提出的关于 将测试神经学说话者的预期协同发音。的一个目标 该项目是表征预期协同发音的典型或 ALS、MS和PD患者的习惯性语言。第二个目标是 确定两种治疗技术的效果-减慢发音速度 和增加的声音强度-在ALS，MS和 警局第三个目标是记录感知印象之间的关系 精确度和协同发音。第二共振峰（F2）频率值，第一 矩系数和辅音F2测量将用于推断 协同发音精密度的比例估计也将与选择相关 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.