Zhao Jing, Zhang John X, Bi Hong-Yan
Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences, 16 Lincui Road, Chaoyang District, Beijing 100101, China ; Graduate University of Chinese Academy of Sciences, Beijing 100049, China.
Centre for Psychology Studies, Fudan University, Shanghai 200433, China.
ISRN Neurosci. 2013 Jul 2;2013:579216. doi: 10.1155/2013/579216. eCollection 2013.
The present study explored the time course of neighborhood frequency effect at the early processing stages, examining whether orthographic neighbors with higher frequency exerted an influence on target processing especially at the phonological stage by using the event-related potential (ERP). Thirteen undergraduate students were recruited in this study, and they were required to covertly name Chinese characters with or without higher-frequency neighbors (HFNs); meanwhile, their brain activity was recorded. Results showed that the effect of neighborhood frequency was significant in frontocentral P2 amplitude, with a reduction for naming characters with HFNs compared to those without HFNs; while there was no effect in posterior N1 amplitude. The only neighborhood frequency effect in P2 component suggested a special role for the HFNs in phonological access of Chinese characters. The decrease in amplitude for naming with-HFN characters might be associated with the phonological interference of higher-frequency neighbors due to their different pronunciations from the target characters.
本研究探讨了早期加工阶段邻域频率效应的时间进程，通过使用事件相关电位（ERP）来检验高频正字法邻域是否对目标加工产生影响，特别是在语音阶段。本研究招募了13名本科生，要求他们默读有或没有高频邻域（HFN）的汉字；同时，记录他们的大脑活动。结果表明，邻域频率效应在额中央区P2波幅上显著，与没有高频邻域的汉字相比，命名有高频邻域的汉字时波幅降低；而后部N1波幅没有影响。P2成分中唯一的邻域频率效应表明高频邻域在汉字语音通达中具有特殊作用。命名有高频邻域汉字时波幅的降低可能与高频邻域的语音干扰有关，因为它们与目标汉字的发音不同。
