Hemispheric asymmetry for emotional stimuli detected with fMRI
Hemispheric asymmetry for emotional stimuli detected with fMRI
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DOI：
10.1097/00001756-199810050-00019
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发表时间：
1998-10-05
期刊：
影响因子：
1.7
通讯作者：
Gabrieli, JDE
中科院分区：
文献类型：
--
作者：
Canli, T;Desmond, JE;Gabrieli, JDE
目前的情绪处理大脑模型假设，积极的（或接近相关的）情绪偏向左半球，而消极的（或退缩相关的）情绪偏向右半球。然而，大脑成像研究迄今未能证明这种半球侧化。在一项功能性磁共振成像（fMRI）研究中，14名女性受试者交替观看了情绪化的积极和消极图片。当将效价体验等同于唤醒时，大脑的整体反应在正面图片时偏向左半球，在负面图片时偏向右半球。这项研究提供了直接支持的效价假说，在同等条件下的唤醒，通过功能性脑成像。(C)1998年利平科特威廉姆斯&威尔金斯。
CURRENT brain models of emotion processing hypothesize that positive (or approach-related) emotions are lateralized towards the left hemisphere, whereas negative (or withdrawal-related) emotions are lateralized towards the right hemisphere. Brain imaging studies, however, have so far failed to document such hemispheric lateralization. In a functional magnetic resonance imaging (fMRI) study, 14 female subjects viewed alternating blocks of emotionally valenced positive and negative pictures. When the experience of valence was equated for arousal, overall brain reactivity was lateralized towards the left hemisphere for positive pictures and towards the right hemisphere for negative pictures. This study provides direct support for the valence hypothesis, under conditions of equivalent arousal, by means of functional brain imaging. (C) 1998 Lippincott Williams & Wilkins.