Wieland Elizabeth A, McAuley J Devin, Dilley Laura C, Chang Soo-Eun
Department of Communicative Sciences and Disorders, Michigan State University, 1026 Red Cedar Rd, East Lansing, MI 48824, USA.
Department of Psychology and Neuroscience Program, Michigan State University, 316 Physics Rd, East Lansing, MI 48824, USA.
Brain Lang. 2015 May;144:26-34. doi: 10.1016/j.bandl.2015.03.008. Epub 2015 Apr 13.
Stuttering is a neurodevelopmental disorder that affects the timing and rhythmic flow of speech production. When speech is synchronized with an external rhythmic pacing signal (e.g., a metronome), even severe stuttering can be markedly alleviated, suggesting that people who stutter may have difficulty generating an internal rhythm to pace their speech. To investigate this possibility, children who stutter and typically-developing children (n=17 per group, aged 6-11 years) were compared in terms of their auditory rhythm discrimination abilities of simple and complex rhythms. Children who stutter showed worse rhythm discrimination than typically-developing children. These findings provide the first evidence of impaired rhythm perception in children who stutter, supporting the conclusion that developmental stuttering may be associated with a deficit in rhythm processing.
口吃是一种神经发育障碍，会影响言语产生的时间和节奏流畅性。当言语与外部节奏起搏信号（如节拍器）同步时，即使是严重的口吃也能得到明显缓解，这表明口吃者可能难以产生内部节奏来为其言语起搏。为了研究这种可能性，对口吃儿童和发育正常的儿童（每组17名，年龄6 - 11岁）在简单和复杂节奏的听觉节奏辨别能力方面进行了比较。口吃儿童的节奏辨别能力比发育正常的儿童差。这些发现首次证明了口吃儿童存在节奏感知受损，支持了发育性口吃可能与节奏处理缺陷有关的结论。
