BRAIN POTENTIALS RELATED TO STAGES OF SENTENCE VERIFICATION
BRAIN POTENTIALS RELATED TO STAGES OF SENTENCE VERIFICATION
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DOI：
10.1111/j.1469-8986.1983.tb00920.x
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发表时间：
1983-01-01
期刊：
影响因子：
3.7
通讯作者：
PERRY, NW
中科院分区：
文献类型：
--
作者：
FISCHLER, I;BLOOM, PA;PERRY, NW
受试者按顺序显示简单句子的术语(例如，麻雀/不是/交通工具)，并手动指示句子是真是假。当句子形式是肯定的(即，X是Y)时，在句子客体呈现后250-450ms的范围内，假句产生的头皮电位显著比真句负。当句子形式为否定时(即X不是Y)，与事件相关电位否定有关的是真实陈述。由于假肯定句和真否定句都是由不匹配的主语和宾语(如麻雀/车辆)组成的，潜势中的否定反映了句子理解初期词语之间的语义不匹配，而不是句子作为一个整体的虚假。讨论了目前语义错配的影响与与不一致的句子相关的N400之间的相似性。反应潜伏期和事件相关电位的模式共同支持句子理解模式，即只有在被否定的命题被理解之后才能处理否定。
Subjects were shown the terms of simple sentences in sequence (e.g., A sparrow / is not / a vehicle) and manually indicated whether the sentence was true or false. When the sentence form was affirmative (i.e., X is a Y), false sentences produced scalp potentials that were significantly more negative than those for true sentences, in the region of about 250-450 ms following presentation of the sentence object. When the sentence form was negative (i.e., X is not a Y), it was the true statements that were associated with the ERP [event-related potential] negativity. Since both the false-affirmative and the true-negative sentences consist of mismatched subject and object terms (e.g., sparrow / vehicle), the negativity in the potentials reflected a semantic mismatch between terms at a preliminary stage of sentence comprehension, rather than the falseness of the sentence taken as a whole. Similarities between the present effects of semantic mismatches and the N400 associated with incongruous sentences are discussed. The pattern of response latencies and of ERP taken together supported a model of sentence comprehension in which negatives are dealt with only after the proposition to be negated is understood.