Wang Yu-Tsai, Kent Ray D, Kent Jane Finley, Duffy Joseph R, Thomas Jack E
School of Dentistry, National Yang-Ming University, Taipei, Taiwan.
Clin Linguist Phon. 2009 May;23(5):335-47. doi: 10.1080/02699200802688604.
Although perceptual studies indicate the likelihood of voice disorders in persons with stroke, there have been few objective instrumental studies of voice dysfunction in dysarthria following stroke. This study reports automatic analysis of sustained vowel phonation for 61 speakers with stroke. The results show: (1) men with stroke and healthy elderly men exhibited an identical voice profile, and men with stroke had only one significantly larger noise parameter (SPI--soft phonation index) than young healthy men; and (2) women with stroke and healthy elderly women exhibited an identical voice profile, except that women with stroke exhibited a significantly higher SPI than healthy elderly women. Although there were no significant differences in smoothed pitch perturbation quotient (sPPQ) and SPI between healthy elderly women and healthy young women, women with stroke exhibited significantly larger sPPQ and SPI than healthy young women. It is suggested that studies on sub-groups of the stroke population that use a combination of perceptual and acoustic analyses will better illuminate the voice dysfunction in dysarthria following stroke.
尽管感知研究表明中风患者存在语音障碍的可能性，但针对中风后构音障碍中语音功能障碍的客观仪器研究却很少。本研究报告了对61名中风患者持续元音发声的自动分析。结果显示：（1）中风男性与健康老年男性呈现出相同的嗓音特征，中风男性仅比年轻健康男性有一个显著更大的噪声参数（SPI——柔和发声指数）；（2）中风女性与健康老年女性呈现出相同的嗓音特征，只是中风女性的SPI显著高于健康老年女性。尽管健康老年女性与健康年轻女性在平滑基频微扰商数（sPPQ）和SPI方面无显著差异，但中风女性的sPPQ和SPI显著大于健康年轻女性。建议对中风人群亚组进行研究，采用感知分析与声学分析相结合的方法，将能更好地阐明中风后构音障碍中的语音功能障碍。
