Kuchinke Lars, Jacobs Arthur M, Võ Melissa L-H, Conrad Markus, Grubich Claudia, Herrmann Manfred
Department of Psychology, Freie Universität Berlin, Germany.
Neuroreport. 2006 Jul 17;17(10):1037-41. doi: 10.1097/01.wnr.0000221838.27879.fe.
We employed event-related functional magnetic resonance imaging to examine emotional valence effects on verbal recognition memory. Using a yes/no recognition task, we focussed on prefrontal cortex responses to positive, negative and neutral words. Behavioral data confirmed enhanced processing of emotional items and functional magnetic resonance imaging revealed different subregions in the prefrontal cortex supporting retrieval of emotional words. Activations in the right mid-ventrolateral prefrontal cortex correlated with the correct retrieval conditions for negative words, whereas the right ventromedial and orbitofrontal prefrontal cortex showed enhanced responses to positive words. Additionally, differences between old and new items mainly affected bilateral orbitofrontal regions when processing positive words. The results are discussed in terms of higher monitoring demands owing to familiarity-based recognition bias for emotional words.
我们采用事件相关功能磁共振成像技术来研究情绪效价对言语识别记忆的影响。通过一个是/否识别任务，我们聚焦于前额叶皮层对积极、消极和中性词汇的反应。行为数据证实了对情绪性项目的加工增强，功能磁共振成像显示前额叶皮层中不同的亚区域支持情绪性词汇的提取。右侧中腹外侧前额叶皮层的激活与消极词汇的正确提取条件相关，而右侧腹内侧和眶额前额叶皮层对积极词汇表现出增强的反应。此外，在加工积极词汇时，新旧项目之间的差异主要影响双侧眶额区域。基于对情绪性词汇基于熟悉度的识别偏差导致的更高监测需求对研究结果进行了讨论。
