Richards Todd, Pettet Mark, Askren Mary, Mestre Zoé, Grabowski Thomas, Yagle Kevin, Wallis Peter, Northey Mary, Abbott Robert, Berninger Virginia
a Integrated Brain Imaging Center, Department of Radiology , University of Washington , Seattle , Washington.
b Learning Sciences and Human Development , University of Washington , Seattle , Washington.
Dev Neuropsychol. 2017;42(4):284-297. doi: 10.1080/87565641.2016.1243110. Epub 2017 Jun 28.
Thirteen students with and twelve students without spelling disabilities judged whether sentences (1/3 all correct spellings, 1/3 with homonym foil, 1/3 with morpheme foil) were meaningful while event-related potentials (ERPs) were measured with EGI Geodesic EEG System 300 (128-channel hydro-cell nets). For N400, Rapid Automatic Switching (RAS) correlated with comprehending sentences with homonym foils in control group but with morpheme foils in SLD group. For P600, dictated spelling correlated with comprehending sentences with morpheme foils in the control group but solving anagrams with homonym foils in the SLD group. Educational significance and neuropsychological significance of these contrasting results are discussed.
13名有拼写障碍的学生和12名无拼写障碍的学生在使用EGI Geodesic EEG系统300（128通道水电极网）测量事件相关电位（ERP）时，判断句子（三分之一全是正确拼写，三分之一带有同音异形异义词干扰，三分之一带有词素干扰）是否有意义。对于N400，快速自动切换（RAS）在对照组中与理解带有同音异形异义词干扰的句子相关，但在学习障碍（SLD）组中与理解带有词素干扰的句子相关。对于P600，听写拼写在对照组中与理解带有词素干扰的句子相关，但在SLD组中与解决带有同音异形异义词干扰的字谜相关。文中讨论了这些对比结果的教育意义和神经心理学意义。
