CAJ | 학술논문

以往关于汉字字词识别脑功能偏侧化的研究发现了左半球优势、右半球优势或者大脑两半球均势三种不同的结果。该研究采用一侧化Stroop范式（刺激分别只呈现于左视野、中央视野或右视野中），通过系统地改变刺激呈现时间以期探讨刺激呈现时问是可以解释这些不一致结果的可能因素之一。结果显示：对于右利手被试。在刺激呈现时间为60ms时右半球出现了较强的Stroop效应，在刺激呈现200m8时左右半球的Stroop效应没有表现出差异，在刺激呈现时间较长时左半球表现出较强的Stroop效应。该结果提示，随着刺激呈现时间的延长，语义优势发生了从右半球到左半球的转换。
이왕관우한자자사식별뇌공능편측화적연구발현료좌반구우세、우반구우세혹자대뇌량반구균세삼충불동적결과。해연구채용일측화Stroop범식（자격분별지정현우좌시야、중앙시야혹우시야중），통과계통지개변자격정현시간이기탐토자격정현시문시가이해석저사불일치결과적가능인소지일。결과현시：대우우리수피시。재자격정현시간위60ms시우반구출현료교강적Stroop효응，재자격정현200m8시좌우반구적Stroop효응몰유표현출차이，재자격정현시간교장시좌반구표현출교강적Stroop효응。해결과제시，수착자격정현시간적연장，어의우세발생료종우반구도좌반구적전환。
The study aimed to examine the relationship between stimulus exposure duration and hemispheric asymmetries for processing Chinese characters. Three durations （60,200 and duration between stimulus onset and response respectively） were used in a half visual field Stroop paradigm, in which colored stimuli were presented to the left, right, or center visual field. The results show that a） there is a right visual field-left hemisphere advantage at a stimulus duration between stimulus onset and response; b） there are no significant differences between right and left visual fields at a stimulus duration of 200 ms; and c） there is a left visual field-right hemisphere advantage at a stimulus duration of 60 ms, in processing Chinese characters for participants with right-handedness. The findings suggest that the advantages of processing the meaning of Chinese characters （Stroop task） across the cerebral hemispheres are modified by the stimulus presentation duration. In addition, the way of responding as quickly as possible or as accurately as possible can affect the direction of a Stroop effect. When responding as quickly as possible, participants show a quick response to congruent stimuuli, and when responding as accurately as possible, participants show a quick response to conflicting stimuli.