한국어 간섭효과의 뇌반응 연구 = Brain Responses to Intervention Effects in Korean.

다국어 초록 (Multilingual Abstract)

It is generally known that the grammaticality judgements vary among the native speakers of Korean concerning the so-called Intervention Effect constructions in the language, where a focused element, say NP-man (only-NP), intervenes between the wh-phrase and its licensing Q. Also, if the wh-phrase is fronted over the intervening focus element via scrambling, the grammaticality is improved. In this study, the reason for this variability of the grammaticality judgments about this type of construction and its scrambled counterpart is explored from a neurophysiological perspective by conducting an EEG experiment, which provides detailed information about sentence comprehension processes by being reflected in both the time-course and the scalp distribution of brain activity. In the experiment the subjects are instructed to answer wh-questions that are regarded to show the Intervention Effect in two different contexts; one where the only-phrase is presupposed and the other where it is not. The ERP data collected from the brain waves of the subjects performing this activity lead to two significant conclusions. One is that a larger amplitude of N400 component is measured in the normal order when the proper presuppositional information is not provided, which suggests that the intervention is strongly related with the ill-formed information structure due to the presupposition failure and thus shows a semantic/pragmatic nature. The other conclusion is that the grammaticality of a scrambled version with the reversed order is not affected by the presence/absence of the relevant presupposition, which seems to indicate that the proper presupposition has been inherently satisfied by the information structure suggested by the surface structure formed via scrambling. This implies that the information structure that reflects the discourse context of an utterance plays a significant role in judging its grammaticality.

참고문헌 (Reference)

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