INTELLIGIBILITY ASSESSMENT IN DYSARTHRIA

拟进行的构音障碍研究的目的有两个方面：（1） 制定定量评估神经系统疾病的程序， 说话者的可懂度受损， 感知的异常维度，以及（2）识别集合或 声学特征的组合， 这些人群中的可理解性缺陷。 实验方案 的设计，以满足三个标准：（1）分类的任务， 与神经系统检查中常规使用的任务平行的方式，（2） 采集数据以处理特定的声学-语音特征， 被认为是可理解性的主要决定因素，以及（3） 分析足够范围的言语行为，以代表各种 运动性言语障碍的损伤维度。 主 研究方法是可懂性判断和知觉评级 (to由训练有素的听众小组进行），声学分析， 声谱和数字方法，电声门图监测 喉的内收-外展运动和呼吸监测， 确定呼吸支持的Respitrace系统的方法， 语音功能 受试者的选择首先基于 第二，代表性问题， 大的临床人群，第三，具体的语言症状， 神经学诊断 我们计划研究四种主要的构音障碍 个体：上运动神经元或下运动神经元受损者 运动神经元继发于脑血管病变（“中风”患者）， 帕金森病患者、脑瘫成人和儿童， ALS患者 这些研究的数据应该有助于 语言清晰度评估的改进临床程序 运动性语言障碍的患者。

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.