Time course of word identification and semantic integration in spoken language

被引:281
作者
Van Petten, C [1 ]
Coulson, S
Rubin, S
Plante, E
Parks, M
机构
[1] Univ Arizona, Dept Psychol, Tucson, AZ 85721 USA
[2] Univ Arizona, Natl Ctr Neurogen Commun Disorders, Tucson, AZ 85721 USA
[3] Univ Arizona, Dept Speech & Hearing Sci, Tucson, AZ 85721 USA
关键词
D O I
10.1037/0278-7393.25.2.394
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
The minimum duration signal necessary to identify a set of spoken words was established by the gating technique; most words could be identified before their acoustic offset. Gated words were used as congruous and incongruous sentence completions, and isolation points established in the gating experiment were compared with the time course of semantic integration evident in event-related brain potentials. Differential N400 responses to contextually appropriate and inappropriate words were observed about 200 ms before the isolation point. Semantic processing was evident before the acoustic signal was sufficient to identify the words uniquely. Results indicate that semantic integration can begin to operate with only partial, incomplete information about word identity Influences of semantic constraint, word frequency, and rate of presentation are described.
引用
收藏
页码:394 / 417
页数:24
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