INTELLIGIBILITY ASSESSMENT IN DYSARTHRIA

拟议的构音障碍研究的目的有两个：(1) 制定神经学定量评估程序 受损的说话者与说话者的可理解性和 异常的感知维度，以及(2)识别集合或 具有以下特征的声学特征的组合 在这些人群中存在可理解性缺陷。实验方案 旨在满足三个标准：(1)任务分类 与神经学检查中常规使用的任务类似的方式，(2) 获取数据以解决特定的声学-语音特征，这些特征 被认为是清晰度的主要决定因素，以及(3) 分析足够范围的言语行为来代表不同的 运动性言语障碍患者的功能障碍维度。初级阶段 研究方法是可理解性判断和知觉评级。 (由训练有素的听众小组进行)，声学分析由 频谱学和数字方法，电声门图监测 内收--喉部外展运动和呼吸监测 呼吸系统确定呼吸支持的方法 语音功能。选题首先要根据 存在可理解性缺陷，其次是对 大量的临床人群，第三，关于特定的言语症状和 神经学诊断。我们计划研究四种主要的关节功能障碍 个体：上端运动神经元或下端运动神经元受损 继发于脑血管病变的运动神经元(中风患者)， 帕金森氏症患者，脑瘫成人和儿童， 和肌萎缩侧索硬化症患者。这些研究的数据应该有助于 改进的评估语言清晰度的临床程序 在运动性语言障碍患者中。

The objective of the proposed studies of dysarthria is two-fold: (1) to develop procedures for the quantitative assessment of neurologically impaired speakers in relation to the speaker's intelligibility and to perceived dimensions of abnormality, and (2) to identify sets or combinations of acoustic features that are characteristic of intelligibility deficits in these populations. The experimental protocol is designed to satisfy three criteria: (1) categorization of tasks in a manner that parallels tasks routinely used in neurologic examinations, (2) acquisition of data to address specific acoustic-phonetic features that are presumed to be the primary determinants of intelligibility, and (3) analysis of a sufficient range of speech behaviors to represent the various dimensions of impairment in the motor speech disorders. The primary methods of research are intelligibility judgments and perceptual ratings (to be made by a trained listener panel), acoustic analysis by spectrography and digital methods, electroglottography to monitor adductory-abductory movements of the larynx, and respiratory monitoring by means of a Respitrace system to determine the respiratory support for speech functions. Subject selection is based first and foremost on the presence of an intelligibility deficit, secondly on representativeness of large clinical populations, and thirdly on specific speech symptoms and neurologic diagnosis. We plan to study four major groups of dysarthric individuals: those with damage to either the upper motor neuron or lower motor neuron secondary to cerebrovascular lesion ("stroke" patients), persons with Parkinsons's disease, cerebral-palsied adults and children, and ALS patients. The data from these studies should contribute to improved clinical procedures for the assessment of speech intelligibility in persons with motor speech disorders.