关键词: 准备效应, 理解, 字谜, ERP

Abstract: Preparation effect could be regarded as what individual did or knowledge obtained during the preparation period having influence on insight problem solving. Whether preparation time has a positive or negative influence or even both on insight problem solving has not reached a uniform conclusion. Time course of insight problem solving has not been validly studied. Thus, this research, based on the catalyze paradigm, compared the event related potentials variations in logogriph understanding between two conditions: with or without preparation. The result showed that between 200ms and 900ms, preparation effect elicited a positive ERP deflection(P200-900), activating most of the scalp regions; preparation effect elicited a positive ERP deflection(P900-1400)in frontal and central scalp regions and a negative ERP deflection(N900-1400)in occipital scalp regions, respectively. It is indicated that: 1)processing in preparation has effect on understanding of the logogriphs. 2)The preparation effect has both facilitation and inhibition on the logogriph understanding. 3)P200-900 may reflect inhibition from the prior knowledge to insight problem solving, P900-1400 as well as N900-1400 indicates inhibition and facilitation from the prior knowledge being together.