Left-lateralized N170 effects of visual expertise in reading: evidence from Japanese syllabic and logographic scripts.
Left-lateralized N170 effects of visual expertise in reading: evidence from Japanese syllabic and logographic scripts.
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DOI：
10.1162/jocn.2008.20125
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发表时间：
2008-10
影响因子：
3.2
通讯作者：
McCandliss BD
中科院分区：
文献类型：
--
作者：
Maurer U;Zevin JD;McCandliss BD
事件相关电位（ERP）的N170组成部分反映了几种视觉专业知识（包括视觉单词专业知识）中经验依赖的神经变化。熟练掌握将字符与音素联系起来的书写系统（即字母书写）的读者通常会对视觉单词形式产生左偏化的N170。这项研究检查了三种日语文字中的N170，这些文字将汉字与更大的音系单位联系起来。参与者是单语英语人士（EL1）和母语日语人士（JL1），他们也精通英语。当参与者在重复检测任务中观看单词或新的控制刺激时，使用129通道阵列收集erp。在同样的刺激下，JL1参与者的N170在所有三种日语文字（包括汉字）上都表现为强烈的左偏化，而EL1参与者的N170则表现为双侧偏化。这表明N170的左侧化依赖于特定的阅读技能，而不仅仅局限于字母文字。另外，日语使用者对熟悉的片假名词和翻译成新的片假名词的汉字的N170反应是相当的，这表明N170专家效应是由对文字的熟悉程度驱动的，而不是对特定视觉词形式的熟悉程度。最后，对于英语单词和新符号串刺激，EL1和JL1受试者对新符号产生了相同的反应，对英语单词产生了更左偏化的N170反应，表明这种影响并不局限于第一语言。综上所述，这些跨语言的结果表明，在非常不同的书写系统中，相似的神经过程是印刷视觉技能的基础。
The N170 component of the event-related potential (ERP) reflects experience-dependent neural changes in several forms of visual expertise, including expertise for visual words. Readers skilled in writing systems that link characters to phonemes (i.e., alphabetic writing) typically produce a left-lateralized N170 to visual word forms. This study examined the N170 in three Japanese scripts that link characters to larger phonological units. Participants were monolingual English speakers (EL1) and native Japanese speakers (JL1) who were also proficient in English. ERPs were collected using a 129-channel array, as participants performed a series of experiments viewing words or novel control stimuli in a repetition detection task. The N170 was strongly left-lateralized for all three Japanese scripts (including logographic Kanji characters) in JL1 participants, but bilateral in EL1 participants viewing these same stimuli. This demonstrates that left-lateralization of the N170 is dependent on specific reading expertise and is not limited to alphabetic scripts. Additional contrasts within the moraic Katakana script revealed equivalent N170 responses in JL1 speakers for familiar Katakana words and for Kanji words transcribed into novel Katakana words, suggesting that the N170 expertise effect is driven by script familiarity rather than familiarity with particular visual word forms. Finally, for English words and novel symbol string stimuli, both EL1 and JL1 subjects produced equivalent responses for the novel symbols, and more left-lateralized N170 responses for the English words, indicating that such effects are not limited to the first language. Taken together, these cross-linguistic results suggest that similar neural processes underlie visual expertise for print in very different writing systems.
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通讯作者：
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