In the eye of the beholder: Individual differences in reward-drive modulate early frontocentral ERPs to angry faces
In the eye of the beholder: Individual differences in reward-drive modulate early frontocentral ERPs to angry faces
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DOI：
10.1016/j.neuropsychologia.2008.12.012
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发表时间：
2009-02-01
期刊：
影响因子：
2.6
通讯作者：
Calder, Andrew J.
中科院分区：
文献类型：
--
作者：
Bediou, Benoit;Eimer, Martin;Calder, Andrew J.
奖励驱动的个体差异与对攻击性面部信号的注意力增加，愤怒的体验增强以及表现出攻击性行为的脆弱性有关。最近的功能磁共振成像研究表明，这些效应依赖于在奖励驱动得分高的受试者中，与中性和悲伤表情相比，对攻击性面部表情的腹内侧前额叶反应减少（杏仁核反应增加）。然而，关于这种调制的定时一无所知。利用事件相关电位（ERPs），我们提供了第一个证据，表明更大的倾向于显示敌意和攻击性行为，（通过奖励驱动的高分测量）与200-300 ms内对攻击性面孔的中线额中枢反应降低有关。除了证实腹内侧前额叶脑区域中愤怒处理和攻击性相关人格特质之间的特定相互作用外，我们的研究首次表明了它们之间的相互作用何时发生在大脑中，加强了先前经典的功能性连接fMRI研究的结果。(C)09爱思唯尔有限公司保留所有权利。
Individual differences in reward-drive have been associated with increased attention toward facial signals of aggression, heightened experience of anger and vulnerability to display aggressive behaviour. Recent fMRI research suggests that these effects rely on reduced ventromedial prefrontal (and increased amygdala) response to aggressive facial displays compared with neutral and sad expressions in subjects scoring high on reward-drive. However, nothing is known about the timing of this modulation. Using event-related potentials (ERPs), we provide the first evidence that greater proneness to display hostile and aggressive behaviour (measured by high scores on the reward-drive) is associated with a reduced midline frontocentral response to aggressive faces within 200-300 ms. In addition to confirming a particular interaction between anger processing and aggression related personality traits in ventromedial prefrontal brain regions, our study brings a first indication of when their interaction occurs in the brain, strengthening results from previous classical as well as functional connectivity fMRI studies. (C)09 Elsevier Ltd. All rights reserved.