Article Title：A comparison of sentence- and discourse-level semantic processing: An ERP study
Abstract：
Eighteen subjects listened to sentences ending with semantically congruent or incongruent words. Each congruent sentence was embedded at the end of a short story so that the final word was semantically acceptable at the sentence le,el but incongruent in terms of discourse context. The same stories were also presented with congruent endings. Auditory ERPs elicited by the final words in these sentences and stories ere compared. Both sentence- and discourse-level semantic integration were associated with N400 and Late Positi e Component (LPC) effects in addition to a new component, P550. Local and global semantic processing, although evoking the same components. were characterized by differential effects on ERP amplitudes according to the amount of text integrated and its congruence. These results indicate similar cognitive processes of context build up, underlying sentence- and discourse-semantic processing. (C) 2002 Elsevier Science (USA). All rights reserved.
Keywords: event-related potentials; semantic processing; discourse; sentence; N400; P550; LPC
DOI: 10.1016/S0093-934X(02)00507-2
Source：BRAIN AND LANGUAGE
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