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Event-related Potential Evidence on the Influence of Accentuation in Spoken Discourse Comprehension in Chinese

¹ Chinese Academy of Sciences, Beijing, People's Republic of China, ² Radboud University, Nijmegen, Netherlands

Reprint requests should be sent to Yufang Yang, Institute of Psychology, Chinese Academy of Sciences, 4A Datun Road, Beijing 100101, People's Republic of China, or via e-mail: yangyf{at}psych.ac.cn.

In an event-related potential experiment with Chinese discourses as material, we investigated how and when accentuation influences spoken discourse comprehension in relation to the different information states of the critical words. These words could either provide new or old information. It was shown that variation of accentuation influenced the amplitude of the N400, with a larger amplitude for accented than for deaccented words. In addition, there was an interaction between accentuation and information state. The N400 amplitude difference between accented and deaccented new information was smaller than that between accented and deaccented old information. The results demonstrate that, during spoken discourse comprehension, listeners rapidly extract the semantic consequences of accentuation in relation to the previous discourse context. Moreover, our results show that the N400 amplitude can be larger for correct (new, accented words) than incorrect (new, deaccented words) information. This, we argue, proves that the N400 does not react to semantic anomaly per se, but rather to semantic integration load, which is higher for new information.