Transient interference of right hemispheric function due to automatic emotional processing
Transient interference of right hemispheric function due to automatic emotional processing
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DOI：
10.1016/s0028-3932(00)00072-5
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发表时间：
2000-01-01
期刊：
影响因子：
2.6
通讯作者：
Knight, RT
中科院分区：
文献类型：
--
作者：
Hartikainen, KM;Ogawa, KH;Knight, RT
我们研究了情绪刺激对半视野视觉辨别任务中左右半球检测性能的影响。一组18名健康受试者被要求区分正三角形和倒三角形（目标）。目标随机呈现在左、右半视区（目标持续时间150 ms）。从国际情感图像系统中选择一个简短的情绪图像（愉快或不愉快，刺激持续时间为150毫秒）或中性的图像，随机呈现在与随后的目标相同（47%）或相反（47%）的空间位置。情绪或中性刺激在随后的目标前150毫秒抵消。实验对象被要求忽略图片，并尽可能快速准确地对目标做出反应。与呈现领域无关，情绪刺激延长了LVF目标的反应时间（P < 0.01），不愉快刺激比愉快刺激的影响更大。目前的研究表明，短暂的情绪刺激选择性地损害了右半球的视觉辨别能力。研究结果表明，情绪刺激的自动处理捕获了右半球的处理资源，并短暂地干扰了右半球的其他功能。(C) 2000 Elsevier Science Ltd.版权所有。
We examined the effects of emotional stimuli on right and left hemisphere detection performance in a hemifield visual discrimination task. A group of 18 healthy subjects were asked to discriminate between upright and inverted triangles (target). Targets were randomly presented in the left or right visual hemifield (150 ms target duration). A brief emotional picture (pleasant or unpleasant; 150 ms stimulus duration) or neutral picture selected from the International Affective Picture System was randomly presented either in the same (47%) or the opposite (47%) spatial location to the subsequent target. Emotional or neutral stimuli offset 150 ms prior to the subsequent target. Subjects were instructed to ignore the pictures and respond to the targets as quickly and accurately as possible. Independent of field of presentation, emotional stimuli prolonged reaction times (P < 0.01) to LVF targets, with unpleasant stimuli showing a greater effect than pleasant stimuli. The current study shows that brief emotional stimuli selectively impair right hemispheric visual discrimination capacity. The findings suggest automatic processing of emotional stimuli captures right hemispheric processing resources and transiently interferes with other right hemispheric functions. (C) 2000 Elsevier Science Ltd. All rights reserved.