INTELLIGIBILITY ASSESSMENT IN DYSARTHRIA

许多神经系统疾病会导致言语障碍。 (构音障碍)。构音障碍最重要的方面是它的 对清晰度的影响。这个项目检查的是可理解性 构音障碍与五种神经系统疾病相关-- 肌萎缩侧索硬化症，帕金森病，上或下 中风、脑性瘫痪和小脑引起的运动神经元损害 退化。这些构音障碍的可理解性降低 通过多种技术组合学习，包括单字学习 可理解性测试旨在产生声学-语音配置文件 选定测试的语音错误模式、声学特征分析 词汇、句子重复和会话的声学分析 用数字信号校正特定关节紊乱误差的样品 处理，通过语音合成模拟构音障碍，以及x- 部分受试者言语清晰度的射线微束研究 关节功能障碍的病人。这些研究的首要假设 不同的构音障碍可以明显地用 关于19个声学-语音特征。这两种技术的结合 研究技术测试这些特征的证据，请访问 不同级别，包括感知、声音信号和 发音模式。研究也计划在 基于口感测验的口感测验的研制与完善 静态和动态皮肤敏感性、振动敏感性和 嘴唇和下巴的本体感觉。这个项目的长期目标是 研究包括(1)改善构音障碍的描述，(2) 改进的言语和口感评价方法 功能；(3)构音障碍的新理论解释 基于知觉、声学和发音数据。

Many neurologic disorders result in a speech impairment (dysarthria). The most important dimension of a dysarthria is its effect on intelligibility. This project examines the intelligibility of the dysarthria associated with five neurologic disorders-- amyotrophic lateral sclerosis, Parkinson's disease, upper or lower motoneuron lesion due to stroke, cerebral palsy, and cerebellar degeneration. Intelligibility reduction in these dysarthrias is studied by a combination of techniques, including single-word intelligibility tests designed to yield acoustic-phonetic profiles of speech error patterns, acoustic signature analyses of selected test words, acoustic analyses of sentence repetition and conversational samples, correction of specific dysarthric errors by digital signal processing, simulations of dysarthria by speech synthesis, and x- ray microbeam studies of speech articulation in selected dysarthric patients. An overarching hypothesis for these studies is that different dysarthrias can be distinctively profiled with respect to 19 acoustic-phonetic features. The combination of research techniques tests for evidence of these features at various levels, including perception, acoustic signal and articulatory pattern. Research also is planned on the development and refinement of an oral sensation test based on static and kinetic cutaneous sensitivity, vibratory sensitivity, and lip and jaw proprioception. The long-term objectives of this research include (1) improved descriptions of dysarthria, (2) refined methods for evaluation of speech and oral sensory function, and (3) new theoretical interpretations of dysarthria based on perceptual, acoustic and articulatory data.