Pre-speech tongue movements and verbal reaction times in acquired apraxia of speech

获得性言语失用症的言语前舌头运动和言语反应时间

• 批准号: 1953943
• 金额: --
• 依托单位: Newcastle University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1953943
• 关键词: Pre; speech; tongue; movements; verbal

Difficulty in initiating utterances is one of the main characteristics of acquired apraxia of speech (AOS), yet few studies of the disorder have examined the lingual movements that occur prior to the acoustic onset. Research into verbal reaction time in a control population shows that lingual movement commences some time before the acoustic onset, and that the reaction time (RT) - the interval between the onset of articulation and the acoustic onset - is influenced by phonetic factors and speech preparation processes such as inhalation. Since speakers with AOS frequently make "groping" articulations and silent posturing prior to producing audible speech in an attempt to adopt the correct articulatory configuration, it is likely that RT in this population is strongly influenced by pre-speech lingual activity. This project proposes to examine this relationship and the wider implications for speech timing in AOS, using ultrasound tongue imaging and acoustic analysis.

发声困难是获得性言语失用症（AOS）的主要特征之一，但很少有研究检查在声音发作之前发生的语言运动。对照人群的言语反应时间研究表明，语言运动在发声开始前一段时间就开始了，而反应时间（RT）——发音开始和发声开始之间的间隔——受到语音因素和言语准备过程（如吸入）的影响。由于患有AOS的说话者经常在发出可听到的语音之前做出“摸索”发音和沉默的姿势，试图采用正确的发音配置，因此该人群中的RT可能受到言语前语言活动的强烈影响。本项目建议使用超声舌成像和声学分析来研究这种关系以及对AOS中语音时序的更广泛影响。