Barrozo Tatiane Faria, Silva Liliane Aparecida Fagundes, Matas Carla Gentile, Wertzner Haydée Fiszbein
Department of Physiotherapy, Audiology and Speech Therapy, and Occupational Therapy, University of São Paulo, São Paulo, Brazil.
Folia Phoniatr Logop. 2024;76(6):562-576. doi: 10.1159/000538849. Epub 2024 Apr 12.
Speech sound disorder (SSD) is a speech and language disorder associated with difficulties in motor production, perception, and phonological representation of sounds and speech segments. Since auditory perception has a fundamental role in forming and organizing sound representation for its recognition, studies that evaluate the cortical processing of sounds are required. Thus, the present study aimed to verify the relation between SSD severity measured by the percentage of correct consonants (PCCs) with the cortical auditory evoked potentials (CAEPs) using speech stimulus.
Twenty-nine children with normal hearing participated in this research and were grouped into three groups by SSD level measured by the PCC index. In addition, the groups were subdivided according to the children's age group: between 60-71 months, 72-83 months, and 83-94 months. The CAEP with speech stimulus was carried out in all children.
Older children had longer P1 and N1 latencies. In P2 latency, there was an interference of age only in the severe group. The N2 latency was affected by age, where older children had longer latency.
The amplitude of CAEP has not suffered any interference with the age, or severity of SSD. For the latency, older children generally presented longer averages than younger ones.
语音障碍（SSD）是一种言语和语言障碍，与声音及语音片段的运动产生、感知和音系表征方面的困难相关。由于听觉感知在形成和组织声音表征以进行识别方面具有基础性作用，因此需要开展评估声音皮质处理过程的研究。因此，本研究旨在使用言语刺激来验证通过正确辅音百分比（PCCs）衡量的SSD严重程度与皮质听觉诱发电位（CAEPs）之间的关系。
29名听力正常的儿童参与了本研究，并根据通过PCC指数衡量的SSD水平分为三组。此外，这些组还根据儿童的年龄组进一步细分：60 - 71个月、72 - 83个月和83 - 94个月。所有儿童均接受了言语刺激下的CAEP检查。
年龄较大的儿童P1和N1潜伏期较长。在P2潜伏期方面，仅重度组存在年龄干扰。N2潜伏期受年龄影响，年龄较大的儿童潜伏期较长。
CAEP的波幅未受到年龄或SSD严重程度的任何干扰。就潜伏期而言，年龄较大的儿童通常比年龄较小的儿童平均潜伏期更长。
