Basma Badriah, Savage Robert, Luk Gigi, Bertone Armando
Department of Educational and Counselling Psychology, McGill University, Montreal, Canada.
Faculty of Education, York University, Toronto, Ontario, Canada.
Dev Neuropsychol. 2024 Oct;49(7):261-279. doi: 10.1080/87565641.2024.2418063. Epub 2024 Oct 25.
The N400 event-related potential (ERP), a marker of lexical-semantic processing, can assess the neural basis of reading difficulties. This study examines 1) semantic processes in typically developing (TD) children and children with reading disabilities (RD) using N400 and Set-for-Variability (SfV) profiles and 2) correlations between N400 and SfV. Fifty-one children read congruent and incongruent sentences during EEG. Results showed RD children lacked an N400 effect and had delayed SfV. A negative correlation between SfV and N400 latency in the RD group indicated distinct semantic processing delays in these children.
N400事件相关电位（ERP）是词汇语义加工的一个指标，可用于评估阅读障碍的神经基础。本研究使用N400和变异性设定（SfV）概况检验了1）发育正常（TD）儿童和阅读障碍（RD）儿童的语义加工过程，以及2）N400与SfV之间的相关性。51名儿童在脑电图（EEG）记录过程中阅读语义一致和不一致的句子。结果显示，RD儿童缺乏N400效应，且SfV延迟。RD组中SfV与N400潜伏期之间呈负相关，表明这些儿童存在明显的语义加工延迟。
