Neural mechanism underlying preview effects and masked priming effects in visual word processing.

IF 1.7 4区 心理学 Q3 PSYCHOLOGY
Xin Huang, Brian W L Wong, Hezul Tin-Yan Ng, Werner Sommer, Olaf Dimigen, Urs Maurer
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Abstract

Two classic experimental paradigms - masked repetition priming and the boundary paradigm - have played a pivotal role in understanding the process of visual word recognition. Traditionally, these paradigms have been employed by different communities of researchers, with their own long-standing research traditions. Nevertheless, a review of the literature suggests that the brain-electric correlates of word processing established with both paradigms may show interesting similarities, in particular with regard to the location, timing, and direction of N1 and N250 effects. However, as of yet, no direct comparison has been undertaken between the two paradigms. In the current study, we used combined eye-tracking/EEG to perform such a within-subject comparison using the same materials (single Chinese characters) as stimuli. To facilitate direct comparisons, we used a simplified version of the boundary paradigm - the single word boundary paradigm. Our results show the typical early repetition effects of N1 and N250 for both paradigms. However, repetition effects in N250 (i.e., a reduced negativity following identical-word primes/previews as compared to different-word primes/previews) were larger with the single word boundary paradigm than with masked priming. For N1 effects, repetition effects were similar across the two paradigms, showing a larger N1 after repetitions as compared to alternations. Therefore, the results indicate that at the neural level, a briefly presented and masked foveal prime produces qualitatively similar facilitatory effects on visual word recognition as a parafoveal preview before a single saccade, although such effects appear to be stronger in the latter case.

Abstract Image

视觉文字处理中预览效应和掩蔽引物效应的神经机制。
两个经典的实验范式--遮蔽重复引物和边界范式--在理解视觉单词识别过程中发挥了举足轻重的作用。传统上,这些范式被不同的研究群体所采用,它们各自有着悠久的研究传统。尽管如此,文献综述表明,这两种范式所建立的文字处理脑电相关性可能显示出有趣的相似性,尤其是在 N1 和 N250 效应的位置、时间和方向方面。然而,迄今为止,还没有人对这两种范式进行过直接比较。在本研究中,我们使用眼动追踪/EEG相结合的方法,以相同的材料(单个汉字)作为刺激物,进行受试内比较。为了便于直接比较,我们使用了简化版的边界范式--单字边界范式。我们的结果显示,两种范式的 N1 和 N250 都具有典型的早期重复效应。然而,与掩蔽引物相比,单词边界范式的 N250 重复效应(即与不同单词引物相比,相同单词引物/回顾后的负性降低)更大。在 N1 效应方面,两种范式的重复效应相似,重复后的 N1 比交替后的大。因此,研究结果表明,在神经水平上,短暂呈现和遮蔽的眼窝引物对视觉单词识别产生的促进作用与单次囊回之前的眼窝旁预览产生的促进作用在本质上是相似的,尽管后者的这种作用似乎更强。
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来源期刊
CiteScore
3.60
自引率
17.60%
发文量
197
审稿时长
4-8 weeks
期刊介绍: The journal Attention, Perception, & Psychophysics is an official journal of the Psychonomic Society. It spans all areas of research in sensory processes, perception, attention, and psychophysics. Most articles published are reports of experimental work; the journal also presents theoretical, integrative, and evaluative reviews. Commentary on issues of importance to researchers appears in a special section of the journal. Founded in 1966 as Perception & Psychophysics, the journal assumed its present name in 2009.
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