语义干扰效应发生阶段的ERP研究

采用延时命名任务,运用事件相关电位（ERP）技术考察了图-词干扰范式下语义干扰效应的发生阶段。在屏幕上呈现图片（如＂狗＂）及其干扰词800ms后,要求被试忽略干扰词命名图片。干扰条件有三：语义关联干扰（如＂猫＂）、语义无关干扰（如＂树＂）和无刺激干扰。结果发现,从图片呈现大约180ms-700ms的时窗内,语义关联干扰和语义无关干扰引起的脑电波与无刺激干扰引起的脑电波均有显著差异。表明语义干扰效应发生在言语产生中的多个阶段。

An ERP Research of the Occurrence Stages of the Semantic Interference Effects

The occurrence stage of semantic interference effect under picture-word interference paradigm was surveyed through delayed naming task and event-related potential（ ERP） technique. In the test,800 ms after the presentation on screen of a picture（eg. ＂ dog＂） and its interference word, the subject was required to neglect the word and name the picture. The interference falls into three categories： semantic-related interference（ eg. ＂ cat＂）, non-semantic-related interference（ eg. ＂ tree＂） and non-stimulus interference. The results show that within the time window of 180 ms to 700 ms of picture presentation continuance, subject＇s brain waves aroused from semantic-related interference and non-semantic-related interference are remarkably different to that aroused by non-stimulus interference. It is indicator that semantic interference effects occur in various stages of verbal production.