Cerebral hemispheric differences in memory of emotional and non-emotional words in normal individuals

被引:36
作者
Nagae, S
Moscovitch, M
机构
[1] Fukuoka Univ Educ, Dept Psychol, Fukuoka 8114192, Japan
[2] Univ Toronto, Dept Psychol, Toronto, ON M5S 3G3, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
cerebral hemispheric difference; memory; emotional word; visual half-field;
D O I
10.1016/S0028-3932(02)00018-0
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
The present study was designed to examine the cerebral hemispheric differences in memory of positive, negative and non-emotional words using a new method of successive presentation to each visual half-field in which perception of each item was nearly perfect thereby allowing laterality differences for effects of emotion on memory to emerge unconfounded by perception (Experiment I). This procedure was compared with traditional perceptual identification (Experiment 2). In Experiment 1, 12 words were presented successively in each half field in each trial followed by free recall at the end of the trial. The results showed that recall of positive and negative emotional words was better than that of non-emotional words in both visual fields. Recall of positive and negative emotional words was not different in left and right visual fields (RVFs) although the recall of non-emotional words was better in the RVF than in the left visual field (LVF). The differences in recall between emotional and non-emotional words was greater in the LVF than in the RVF. Experiment 2 used the more traditional method of perceptual identification following each visual half-field presentation of a single item. Perceptual identification was better in the RVF than the LVF in each word condition. There were no visual field differences in perceptual identification between emotional and non-emotional words, as there was for memory in Experiment 1. The results supported the hypothesis that explicit memory for emotional words was dependent more on the right hemisphere, whereas perception of both emotional and non-emotional words was more dependent on the left hemisphere. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:1601 / 1607
页数:7
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