Stimulus onset asynchrony and the timeline of word recognition: Event-related potentials during sentence reading
Stimulus onset asynchrony and the timeline of word recognition: Event-related potentials during sentence reading
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DOI：
10.1016/j.neuropsychologia.2012.04.011
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发表时间：
2012-07-01
期刊：
影响因子：
2.6
通讯作者：
Kliegl, Reinhold
中科院分区：
文献类型：
--
作者：
Dambacher, Michael;Dimigen, Olaf;Kliegl, Reinhold
三个事件相关电位实验考察了词汇呈现速度(即刺激起始异步性)对句子阅读中词频的时程效应和可预测性效应的影响。在实验1和实验2中，句子分别以700ms和490ms的SOA值在屏幕中心逐字呈现。虽然这些比率在心理语言学的ERP研究中是典型的，但自然阅读发生的速度要快得多。相应地。实验3采用了一个接近正常的读数为280ms，与正常读数的读数速度接近。主要研究结果如下：(1)随着呈现频率的增加，早期频率效应的起始潜伏期逐渐缩短。(2)只有在接近正常的SOA下，才能观察到自上而下和自下而上处理之间的早期交互。(3)N400可预测性效应出现的时间较晚，在接近正常(即高)的呈现速率下比ERP实验中常用的较低呈现速率下的N400预测效应小。(4)与较长的SOA相比，最短的ERP形态不同。综上所述，这些结果指出了近正常呈现速率在视觉单词识别中的特殊作用，因此建议在自然阅读研究中应该考虑到SOA。(C)2012爱思唯尔有限公司。保留所有权利。
Three ERP experiments examined the effect of word presentation rate (i.e., stimulus onset asynchrony, SOA) on the time course of word frequency and predictability effects in sentence reading. In Experiments 1 and 2, sentences were presented word-by-word in the screen center at an SOA of 700 and 490 ms, respectively. While these rates are typical for psycholinguistic ERP research, natural reading happens at a considerably faster pace. Accordingly. Experiment 3 employed a near-normal SOA of 280 ms, which approximated the rate of normal reading. Main results can be summarized as follows: (1) The onset latency of early frequency effects decreases gradually with increasing presentation rates. (2) An early interaction between top-down and bottom-up processing is observed only under a near-normal SOA. (3) N400 predictability effects occur later and are smaller at a near-normal (i.e., high) presentation rate than at the lower rates commonly used in ERP experiments. (4) ERP morphology is different at the shortest compared to longer SOAs. Together, the results point to a special role of a near-normal presentation rate for visual word recognition and therefore suggest that SOA should be taken into account in research of natural reading. (C) 2012 Elsevier Ltd. All rights reserved.