Trans-saccadic parafoveal preview benefits in fluent reading: A study with fixation-related brain potentials
Trans-saccadic parafoveal preview benefits in fluent reading: A study with fixation-related brain potentials
复制标题
DOI：
10.1016/j.neuroimage.2012.04.006
复制
发表时间：
2012-08-01
期刊：
影响因子：
5.7
通讯作者：
Sommer, Werner
中科院分区：
文献类型：
--
作者：
Dimigen, Olaf;Kliegl, Reinhold;Sommer, Werner
在自然阅读期间，对即将到来的单词的旁视预览便于其随后的识别（例如，与掩蔽预览相比，更短的注视持续时间），但是对于这种所谓的预览益处的神经相关性一无所知。此外，虽然证据是强有力的，读者预处理的拼写特征即将到来的话，这是有争议的，是否也可以访问的parafterialally词义。我们调查了阅读中旁视信息使用的时间、范围和电生理学相关性，方法是在参与者从左到右流畅地阅读单词列表时，同时记录眼球运动和固定相关脑电位（FRPs）。对于一个词，目标（例如，“刀片”）旁旁视信息通过显示相同的（“刀片”）、语义相关的（“刀”）或不相关的（“糖”）词作为预览来操纵。在边界试验中，预览显示paraferialally，但改变了正确的目标词在传入扫视。重复经典的研究结果，目标词固定后，相同的预览。在脑电图，这种好处反映在枕颞预览积极之间的200和280毫秒。相反，没有促进相关的预览。在旁视中央凹试验中，预览和目标被嵌入在相邻的列表位置，而没有显示变化。两个相关的词的连续固定产生N400启动效应，但只有不久（160 ms）后，第二个词直接固定。结果表明，在正常的阅读条件下，旁额叶预处理对单词的神经反应有很大的改变。我们没有发现任何证据表明单词的意义有助于这些效果。扫视相关显示操作可以与EEG记录相结合来研究视觉中的中心凹外感知。(C)2012 Elsevier Inc. All rights reserved.
During natural reading, a parafoveal preview of the upcoming word facilitates its subsequent recognition (e.g., shorter fixation durations compared to masked preview) but nothing is known about the neural correlates of this so-called preview benefit. Furthermore, while the evidence is strong that readers preprocess orthographic features of upcoming words, it is controversial whether word meaning can also be accessed parafoveally. We investigated the timing, scope, and electrophysiological correlates of parafoveal information use in reading by simultaneously recording eye movements and fixation-related brain potentials (FRPs) while participants read word lists fluently from left to right. For one word the target (e.g., "blade") parafoveal information was manipulated by showing an identical ("blade"), semantically related ("knife"), or unrelated ("sugar") word as preview. In boundary trials, the preview was shown parafoveally but changed to the correct target word during the incoming saccade. Replicating classic findings, target words were fixated shorter after identical previews. In the EEG, this benefit was reflected in an occipitotemporal preview positivity between 200 and 280 ms. In contrast, there was no facilitation from related previews. In parafoveal-on-foveal trials, preview and target were embedded at neighboring list positions without a display change. Consecutive fixation of two related words produced N400 priming effects, but only shortly (160 ms) after the second word was directly fixated. Results demonstrate that neural responses to words are substantially altered by parafoveal preprocessing under normal reading conditions. We found no evidence that word meaning contributes to these effects. Saccade-contingent display manipulations can be combined with EEG recordings to study extrafoveal perception in vision. (C) 2012 Elsevier Inc. All rights reserved.