Print-specific N170 involves multiple subcomponents for Japanese Hiragana
Print-specific N170 involves multiple subcomponents for Japanese Hiragana
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打印专用的 N170 涉及日语平假名的多个子组件
DOI：
10.1016/j.neulet.2017.04.020
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发表时间：
2017
影响因子：
2.5
通讯作者：
Kasai Tetsuko
中科院分区：
文献类型：
--
作者：
Uno Tomoki;Okumura Yasuko;Kasai Tetsuko
事件相关电位中的印刷特定N170通常被认为反映了对字母串的相对自动处理，这对于流畅的阅读至关重要。然而，我们之前的研究表明，在快速刺激呈现下，透明日语平假名文字的印刷特定N170至少包括两个子成分：与注意相关的左侧N170和与更自动的正字法处理相关的双侧N170（Okumura，加塞& Murohashi，2014，2015）。本研究旨在通过控制字母的呈现频率和非语言视觉控制（即，符号），但发现了一个完全不同的结果模式;一个增强的枕颞积极的字（80-120毫秒刺激后），其次是典型的左侧N170和增强顶叶消极的非字（150-200毫秒）。这些结果应该提供进一步的见解注意和打印处理的早期阶段之间的相互作用过程。
Print-specific N170 in event-related potentials is generally considered to reflect relatively automatic processing for letter strings, which is crucial for fluent reading. However, our previous studies demonstrated that print-specific N170 for transparent Japanese Hiragana script consists of at least two subcomponents under rapid stimulus presentation: an attention-related left-lateralized N170 and a bilateral N170 associated with more automatic orthographic processes (Okumura, Kasai & Murohashi, 2014, 2015). The present study aimed to confirm the latter component by controlling presentation frequency of letters and nonlinguistic visual controls (i.e., symbols), but found a quite different pattern of results; an enhanced occipito-temporal positivity for words (80–120 ms poststimulus) followed by the typical left-lateralized N170 and an enhanced parietal negativity for nonwords (150–200 ms). These results should provide further insights into the interaction processes between attention and early stages of print processing.