Gandour J, Dardarananda R
Brain Lang. 1984 Nov;23(2):177-205. doi: 10.1016/0093-934x(84)90063-4.
The aim of this study was to investigate voice onset time (VOT) production in homorganic word-initial stops in Thai in order to explore the nature of speech production deficits across clinical varieties of aphasia. Thai exhibits a three-category distinction in bilabial (/b,p,ph/) and alveolar (/d,t,t,h/) stops, and a two-category distinction in velar (/k,kh/) stops. Subjects included three Broca asphasics, one transcortical motor asphasic, two global asphasics, one conduction aphasic, one Wernicke aphasic, one nonaphasic dysarthric patient, one right-brain-damaged patient, and five normal controls. Test stimuli consisted of eight monosyllabic real words. The results of VOT measurements indicated that Broca and global asphasics exhibited a more severe production disorder than Wernicke, conduction, or transcortical motor asphasics. The right-brain-damaged patient showed no impairment in VOT production. Comparisons are drawn to earlier studies of VOT production in aphasia in two-category languages. Issues concerning the underlying basis of the production deficit for nonfluent aphasics, fluent aphasics, and nonaphasic dysarthrics as well as the relation between perception and production of VOT are discussed.
本研究旨在调查泰语中同部位词首塞音的语音起始时间（VOT）产出情况，以探究失语症临床类型中言语产出缺陷的本质。泰语在双唇音（/b,p,ph/）和齿龈音（/d,t,t,h/）塞音上有三类区别，在软腭音（/k,kh/）塞音上有两类区别。受试者包括三名布罗卡失语症患者、一名经皮质运动性失语症患者、两名完全性失语症患者、一名传导性失语症患者、一名韦尼克失语症患者、一名非失语性构音障碍患者、一名右脑损伤患者和五名正常对照。测试刺激由八个单音节实词组成。VOT测量结果表明，布罗卡失语症患者和完全性失语症患者表现出比韦尼克失语症患者、传导性失语症患者或经皮质运动性失语症患者更严重的产出障碍。右脑损伤患者在VOT产出方面未表现出受损。文中还与早期关于两类语言中失语症患者VOT产出的研究进行了比较。讨论了非流利型失语症患者、流利型失语症患者和非失语性构音障碍患者产出缺陷的潜在基础以及VOT感知与产出之间的关系等问题。
