对成年口吃者句子处理的事件相关电位研究。
An event-related potential investigation of sentence processing in adults who stutter.
作者信息
Murase Shinobu, Kawashima Takashi, Satake Hirotaka, Era Seiichi
机构信息
Division of Special Needs Education, Faculty of Education, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan; Department of Physiology and Biophysics, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
Department of Neurobiology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
出版信息
Neurosci Res. 2016 May;106:29-37. doi: 10.1016/j.neures.2015.10.004. Epub 2015 Oct 23.
The purpose of this study was to investigate characteristics of the semantic processing of sentences' final verbs in stutterers using event-related potential (ERP). ERPs elicited from semantically violating and non-violating verbs in Japanese sentences were compared between 13 adults who stutter (AWS) and 13 adults who do not stutter (AWNS). The stimulus sentences elicited the N400 and the late positive component (LPC) in both groups. The amplitude of the N400, however, was attenuated in AWS. Regarding the LPC, the LPC in the 450-700ms time window (the early LPC) was evident in both groups, but the LPC in the 700-850 time window (the late LPC) was only apparent in AWS. Because AWS judged sentence congruency as accurately as AWNS did, it is assumed that AWS depended more on the LPC for semantic processing, resulting in the enhancement of the late LPC. We speculate that semantic processing of sentences for AWS is more time consuming than that for AWNS.
本研究的目的是利用事件相关电位（ERP）来调查口吃者对句子中最后一个动词的语义加工特征。比较了13名口吃成年人（AWS）和13名非口吃成年人（AWNS）在日语句子中由语义违反和非违反动词引发的ERP。两组中，刺激句子均引发了N400和晚期正成分（LPC）。然而，AWS组中N400的波幅减弱。关于LPC，两组在450 - 700毫秒时间窗口（早期LPC）的LPC都很明显，但在700 - 850毫秒时间窗口（晚期LPC）的LPC仅在AWS组中明显。由于AWS判断句子一致性的能力与AWNS相当，因此推测AWS在语义加工中更多地依赖LPC，导致晚期LPC增强。我们推测，AWS对句子的语义加工比AWNS更耗时。
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