期刊
BIOLOGICAL PSYCHOLOGY
卷 99, 期 -, 页码 125-136出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.biopsycho.2014.03.010
关键词
Electroencephalography; Source reconstruction; Prefrontal cortex; Associative learning; Vision; Emotion; Rapid evaluation; Feed-forward sweep
资金
- IMF (Innovative Medizinische Forschung, innovative medical research) of the University Hospital Munster [BR121011]
- SFB-TRR58 project [C01]
The human brain's ability to rapidly identify emotional stimuli is subject of ongoing debate. The 'standard hypothesis' postulates a fast but coarse screening of the stimulus valence in subcortical regions, the amygdala in particular, followed by a precise, cortically driven analysis. Recent electrophysiological studies reported differential effects of conditioned faces in prefrontal regions as early as 60-80 ms after target onset, suggesting considerably faster cortical processing than traditionally assumed. Evidence for rapid prefrontal evaluation was provided specifically for complex and evolutionarily significant stimuli, i.e. faces. Here we used simple gratings in a conditioning paradigm, testing the generalization of these results. Event-related potentials and source reconstruction identified rapid (60-80 ms) enhanced processing of affectively conditioned gratings in occipital as well as prefrontal areas. Our results support the assumption of a general fast feed-forward sweep of information, partially activating an interconnected network of affective processing encompassing sensory, subcortical and prefrontal cortex regions. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据