Neurocognitive Correlates of Statistical Learning of Orthographic-Semantic Connections in Chinese Adult Learners

作     者：Xiuhong Tong Yi Wang Shelley Xiuli Tong Xiuhong Tong;Yi Wang;Shelley Xiuli Tong

作者机构：Department of PsychologyThe Education University of Hong KongHong KongChina Institute of Psychological SciencesHangzhou Normal UniversityHangzhou 310000China Human CommunicationDevelopmentand Information SciencesFaculty of EducationThe University of Hong KongHong KongChina 

出 版 物：《Neuroscience Bulletin》 (神经科学通报（英文版）)

年 卷 期：2020年第36卷第8期

页      面：895-906页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071006[理学-神经生物学] 

基　　金：supported,in part,by the General Research Fund of the Hong Kong Government Research Grant Council(17609518) the Early Career Scheme of the Hong Kong Grants Council (28606419) the National Natural Science Foundation of China (31600903) 

主　　题：Orthography-semantic connection Statistical learning N170 P200 N400 

摘      要：We examined the neural correlates of the statistical learning of orthographic-semantic connections in Chinese adult *** event-related potentials(ERPs) were recorded while participants were exposed to a sequence of artificial logographic characters containing semantic radicals carrying low,moderate,or high levels of semantic *** behavioral results showed that the mean accuracy of participants’ recognition of previously exposed characters was 63.1% that was significantly above chance level(50%),indicating the statistical learning of the regularities of semantic *** ERP data revealed a temporal sequence of the neural process of statistical learning of orthographic-semantic connections,and different brain indexes were found to be associated with this processing,i.e.,a clear N170-P200-N400 *** N170,the larger negative amplitudes were evoked by the high and moderate consistency than the low *** P200,the mean amplitudes elicited by the moderate and low consistency were larger than the high *** contrast,a larger N400 amplitude was observed in the low than moderate and high consistency;and more negative amplitude was elicited by the moderate than high *** propose that the initial potential shifts(N170 and P200) may reflect orthographic or graphic form identification,while the later component(N400) may be associated with semantic information analysis.