The ERPs' Study On Chinese Presupposition Triggers

Regarding the presupposition,here is such a definition:Sentence p presupposes sentence q,only if sentence q is verified as real;Otherwise,in lack of the truth of sentence q,sentence p could be seen as falseness.Even with a clear definition,the concept of presupposition would still exist in the field of what we take for granted in the daily communication.Regarding the presupposition,it is presupposition trigger,as well as presupposition projection and mental states,that confuse most scholars when presupposition occurs in the daily communication.Based on the above theoretical knowledge,this thesis selects one angle,that is,the research of the presupposition trigger.The research on the presupposition trigger is more based on the theoretical level at home and abroad,so this thesis makes use of the EEG experiment,with the help of event-related potential techniques,in order to answer the following questions:First,"do the different types of presupposition triggers in Chinese produce different brain effects,and why is this happening?" Second,"in the same category of presupposition triggers,on different conditions,is there any difference or sameness?"Based on the previous theoretical research,investigation and preparation,this thesis is about to do the corresponding EEG research on the verbs of the presupposition triggers in Chinese,in which three kinds of triggers are selected for "factive verbs" and"change-of-state verbs".Factive verbs include,"regret","celebrate","like" in Chinese;change-of-state verbs include,"start","change","stop" in Chinese.Three contexts were designed for these two types of words,including conditions of satisfaction,accommodation and failure.In this thesis,after the experiment,it comes to the conclusion that the "factive verbs"will produce N400 under the condition of accommodation,and P300 will be generated under the failure condition;The "change-of-state verbs" will produce N400 under both the accommodation condition and the failure condition.By further analyzing the processing burden,it is inferred that the processing burden of "factive verbs" is less than"change-of-state verbs" under the satisfaction condition and the failure condition,but under the accommodation condition,the processing burden of the two verbs is almost the same.On the three conditions within the respective triggers,the processing burden of the accommodation condition is heavier than the failure condition,and the former two are more difficult than the satisfaction condition.