Stelmack R M, Saxe B J, Noldy-Cullum N, Campbell K B, Armitage R
School of Psychology, University of Ottawa, Ontario, Canada.
J Clin Exp Neuropsychol. 1988 Mar;10(2):185-200. doi: 10.1080/01688638808408235.
Visual event-related potentials elicited during a word-recognition memory task were examined for groups of normal and disabled readers (RD). The strong association of reading ability with recognition memory performance endorsed the appropriateness of this signal detection paradigm as a reading-related task. Enhanced amplitude of the P200 component for the RD group was evident during both the acquisition and recognition series and it is indicative of differences at an early sensory stage of item encoding and retrieval. Normal readers displayed greater N400 amplitude than the RD group during both the acquisition and recognition series, an effect which is consistent with more extensive semantic evaluation or memory search that is attributed to that component. In the absence of any remarkable differences in P300 amplitude between groups, the poorer recognition memory performance for the RD group may not be attributable to attentional deficits.
我们对正常读者组和阅读障碍读者（RD）在单词识别记忆任务中诱发的视觉事件相关电位进行了检查。阅读能力与识别记忆表现之间的强烈关联证实了这种信号检测范式作为一项与阅读相关任务的适用性。RD组在获取和识别系列过程中，P200成分的振幅增强是明显的，这表明在项目编码和检索的早期感觉阶段存在差异。在获取和识别系列过程中，正常读者比RD组表现出更大的N400振幅，这种效应与该成分所归因的更广泛的语义评估或记忆搜索是一致的。由于两组之间P300振幅没有任何显著差异，RD组较差的识别记忆表现可能不归因于注意力缺陷。
