Ge Shengnan, Wan Qin, Wang Yongli, Yin Minmin, Huang Zhaoming
School of Life Sciences, East China Normal University, Shanghai, China.
Department of Rehabilitation Sciences, Faculty of Education, East China Normal University, Shanghai, China.
Front Hum Neurosci. 2024 Jan 8;17:1298974. doi: 10.3389/fnhum.2023.1298974. eCollection 2023.
Speech production includes segmental and suprasegmental features, which interact and cooperate with each other. Impaired speech production is common in individuals with post-stroke dysarthria. The commonly used phonemic contrast therapy and Accent Method in clinical practice can improve the segmental and suprasegmental aspects, respectively. This study aimed to explore the feasibility and immediate effectiveness of the combination of specific rhythm patterns of the Accent Method and phonemic contrast on speech production.
Fifteen poststroke dysarthria patients (12 males and three females) first received accentuation task of three rhythm patterns (Largo-slow, Andante-medium, Allegro-fast) and later received speech task in appropriate rhythm patterns combined with phonemic contrast materials and non-phonemic contrast materials. Speech parameters were analyzed by considering speech clarity and prosody.
The results showed that the number of correct target syllables, sentence clarity, and standard deviation of intensity increased significantly, and the average length of pauses and abnormal pause times decreased significantly in Andante (medium) compared to other rhythms. The number of correct target syllables, sentence clarity, and standard deviation of intensity increased significantly compared with those in the non-phonemic contrast in Andante (medium).
The combination of phonemic contrast and Accent Method was verified to have an immediate effect on speech production in Mandarin speakers with post-stroke dysarthria and could be further validated in other diseases with impaired speech production in the clinic in the future.
言语产生包括音段特征和超音段特征，它们相互作用、相互协作。言语产生受损在中风后构音障碍患者中很常见。临床实践中常用的音位对比疗法和重音法分别可以改善音段和超音段方面的问题。本研究旨在探讨重音法的特定节奏模式与音位对比相结合对言语产生的可行性和即时效果。
15名中风后构音障碍患者（12名男性和3名女性）首先接受三种节奏模式（广板 - 慢、行板 - 中、快板 - 快）的重音任务，随后接受以适当节奏模式结合音位对比材料和非音位对比材料的言语任务。通过考虑言语清晰度和韵律来分析言语参数。
结果显示，与其他节奏相比，行板（中）节奏下正确目标音节数量、句子清晰度和强度标准差显著增加，平均停顿长度和异常停顿次数显著减少。与行板（中）节奏下的非音位对比相比，正确目标音节数量、句子清晰度和强度标准差显著增加。
音位对比和重音法的结合被证实对中风后构音障碍的普通话使用者的言语产生有即时效果，未来可在临床上对其他言语产生受损的疾病中进一步验证。
