MEG correlates of bimodal encoding of faces and persons' names.
MEG correlates of bimodal encoding of faces and persons' names.
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MEG 关联人脸和人名的双峰编码。
DOI：
10.1016/j.brainres.2008.07.003
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发表时间：
2008
期刊：
影响因子：
2.9
通讯作者：
Papanicolaou,AndrewC
中科院分区：
文献类型：
--
作者：
Pazo-Alvarez,P;Simos,PG;Castillo,EM;Juranek,J;Passaro,AD;Papanicolaou,AndrewC
学习人的脸和名字之间的联系是一种普遍的认知功能，具有重要的社会意义。本研究的目的是研究与名字和面孔的跨模式编码相关的大脑活动模式。使用相同的视觉和听觉刺激，将学习面孔-名字对与单峰学习任务进行比较。使用自动震源估计方法，通过脑磁图获得时空脑激活轮廓。结果显示，在编码阶段，左右(人名)和右(脸部)颞叶皮质激活，主要集中在右半球枕区和枕颞区(脸部)，以及右半球背外侧前额叶区域，这两种类型的刺激呈孤立呈现。配对的(面孔-名字)刺激刺激引起双侧前额叶和颞叶对面孔的视神经活动，并增强了对名字的反应的视觉皮质激活(与不配对的条件下的名字相比)。这些发现表明，在有意义的视觉和听觉刺激之间形成联系的过程中，大脑激活了不同的模式。
Learning associations between people's faces and names is a universal cognitive function with important social implications. The goal of the present study was to examine brain activity patterns associated with cross-modal encoding of names and faces. Learning face-name pairs was compared to unimodal learning tasks using the same visual and auditory stimuli. Spatiotemporal brain activation profiles were obtained with magnetoencephalography using an automated source estimation method. Results showed activation foci in left (for names) and right (for faces) temporal lobe perisylvian cortices, predominantly right-hemisphere occipital and occipitotemporal regions (for faces), and right hemisphere dorsolateral prefrontal regions during the encoding phase for both types of stimuli presented in isolation. Paired (face-name) stimulus presentation elicited bilateral prefrontal and temporal lobe perisylvian activity for faces and enhanced visual cortex activation in response to names (compared to names in the unpaired condition). These findings indicate distinct patterns of brain activation during the formation of associations between meaningful visual and auditory stimuli.