Caruso A J, Burton E K
J Speech Hear Res. 1987 Mar;30(1):80-7. doi: 10.1044/jshr.3001.80.
The purpose of this study was to investigate stop-gap duration, voice onset time (VOT), and vowel duration in intelligible speakers with amyotrophic lateral sclerosis (ALS). Broadband sound spectrograms were used to measure 8 normal and 8 ALS speakers' intelligible speech productions of monosyllabic words containing word-initial stop-plosive consonants (/p, t, k, b, d, g/). Significant differences were found between the two groups for both vowel duration and stop-gap duration; moreover, correlational analysis indicated that the ALS speakers, as a group, exhibited a direct relationship between stop-gap and vowel durations associated with productions of /t/ and /k/. No significant differences were found between the two talker groups for VOT. Results will be related to the neuroanatomical and physiological mechanisms involved in dysarthric (ALS) speech.
本研究旨在调查肌萎缩侧索硬化症（ALS）患者中可理解性言语者的停顿间隙时长、语音起始时间（VOT）和元音时长。宽带声谱图用于测量8名正常人和8名ALS患者对包含词首塞音辅音（/p、t、k、b、d、g/）的单音节词的可理解性言语产出。两组在元音时长和停顿间隙时长上均存在显著差异；此外，相关性分析表明，作为一个群体，ALS患者在与/t/和/k/发音相关的停顿间隙和元音时长之间呈现出直接关系。两组说话者在VOT上未发现显著差异。研究结果将与构音障碍（ALS）言语所涉及的神经解剖学和生理机制相关联。
