Year: 2026
Type: article
Study design: Observational Study
Abstract: It has been reported that people who stutter have multiple symptoms such as cluttering and neurodevelopmental disorders. Adults with developmental stuttering (ADS) showed significant interaural differences in interpeak latencies in auditory brainstem responses, suggesting a self-monitoring deficit as a potential mechanism. Furthermore, lateral articulation disorder was observed in approximately 30% of ADS participants. Therefore, we assumed that ADS may have speech sound discrimination disorder. Event-related potential (ERP) P300 measurements underwent during the oddball tasks, that were lateral articulation distortion speech discrimination tasks. Eleven ADS and 14 adults without developmental stuttering (control group) participated our research. We analyzed the aspects of their neurophysiological ERP and neuropsychological discrimination tasks data. As a result, the P300 latency of ADS were significantly delayed compared to control group. Particularly, in the discrimination task between /ki/ and its lateral distortion combinations, the latency was further delayed as stuttering became more severe. As a mechanism of stuttering, in addition to problems with auditory monitoring functions, it was considered that as stuttering becomes more severe, delays occur when judging speech information, potentially causing overlapping temporal processing issues.
Author: 安崎, 文子
Language: Japanese
Subfield: Clinical Psychology
Field: Psychology
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W7207985831