The Developmental Change of Print‐Tuned N170 in Highly Transparent Writing Systems
The Developmental Change of Print‐Tuned N170 in Highly Transparent Writing Systems
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Print-Tuned N170在高透明书写系统中的发展变化
DOI：
10.1111/jpr.12397
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发表时间：
2021
影响因子：
0.8
通讯作者：
Seki Ayumi
中科院分区：
文献类型：
--
作者：
Uno Tomoki;Kasai Tetsuko;Seki Ayumi
快速和内隐的字母到声音的转换是一个显着的能力，在上学期间发展，这是反映在左侧的打印调谐N170事件相关电位。以往的研究表明，小学儿童学习拼音文字时会诱发双侧N170，这反映了他们语音转换加工的不发达。然而，学习日语平假名的儿童，与字母文字相比，具有更好的字母-声音对应，可能会在学习阅读的早期阶段获得自动语音转换。为了验证这一观点，我们通过比较4 - 6年级的小学生和大学生，研究了打印调谐N170的发展变化。参与者被要求在一系列黑色平假名单词、非单词和外国字母串中检测不常见的蓝色刺激。大学生表现出典型的左侧N170。与此相反，儿童引起双边N170印刷刺激，表明内隐语音转换仍然没有建立。这一发现表明，字母到声音转换的自动化需要一个相对较长的学习期，即使在正字法透明的脚本。
Rapid and implicit letter‐to‐sound conversion is a remarkable ability that develops during school years, which is reflected in the left lateralization of the print‐tuned N170 event‐related potential. Previous studies have shown that elementary school children learning alphabetic scripts elicit bilateral N170, which reflects their underdeveloped phonological conversion processing. However, children learning Japanese hiragana, which has better letter–sound correspondence compared with alphabetic scripts, may acquire the automatic phonological conversion in the early stages of learning to read. To test this notion, we investigated the developmental change of the print‐tuned N170 by comparing 4th–6th grade elementary school children with college students. Participants were required to detect infrequent blue stimuli among a series of black‐colored hiragana words, nonwords, and foreign letter strings. College students showed typical left‐lateralized N170. In contrast, children elicited bilateral N170 for print stimuli, indicating that the implicit phonological conversion was still not established. The finding suggests that the automatization of letter‐to‐sound conversion requires a relatively long learning period even in orthographically transparent scripts.