Bidirectional Electric Communication Between the Inferior Occipital Gyrus and the Amygdala During Face Processing
Bidirectional Electric Communication Between the Inferior Occipital Gyrus and the Amygdala During Face Processing
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DOI：
10.1002/hbm.23678
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发表时间：
2017-09-01
影响因子：
4.8
通讯作者：
Toichi, Motomi
中科院分区：
文献类型：
--
作者：
Sato, Wataru;Kochiyama, Takanori;Toichi, Motomi
人脸包含多方面的信息，对人类交流很重要。神经影像学研究已经揭示了多个大脑区域中的面部特异性激活，包括枕下回（IOG）和杏仁核;通常认为这些区域构成了负责处理面部的神经网络。然而，这些大脑区域是否以及如何在面部处理过程中传递信息仍然是未知的。本研究调查了这些问题，通过应用动态因果模型的诱导反应，以人类颅内脑电图数据记录从IOG和杏仁核在观察的面孔，马赛克，房屋在直立和倒置的方向。模型比较评估直立的脸与直立的房子和直立的脸与直立马赛克的实验效果一致表明，该模型具有特定的IOG和杏仁核之间的双向调节作用的脸是最有可能的。直立与倒置面孔之间的实验效应也有利于IOG和杏仁核之间具有双向调节效应的模型。调制效应的光谱分布揭示了相同频率（例如，γ-γ）和交叉频率（例如，θ-γ）耦合。这些结果表明，IOG和杏仁核使用各种类型的振荡来有效地处理面孔，从而快速地相互通信。(C)2017 Wiley Periodicals，Inc.
Faces contain multifaceted information that is important for human communication. Neuroimaging studies have revealed face-specific activation in multiple brain regions, including the inferior occipital gyrus (IOG) and amygdala; it is often assumed that these regions constitute the neural network responsible for the processing of faces. However, it remains unknown whether and how these brain regions transmit information during face processing. This study investigated these questions by applying dynamic causal modeling of induced responses to human intracranial electroencephalography data recorded from the IOG and amygdala during the observation of faces, mosaics, and houses in upright and inverted orientations. Model comparisons assessing the experimental effects of upright faces versus upright houses and upright faces versus upright mosaics consistently indicated that the model having face-specific bidirectional modulatory effects between the IOG and amygdala was the most probable. The experimental effect between upright versus inverted faces also favored the model with bidirectional modulatory effects between the IOG and amygdala. The spectral profiles of modulatory effects revealed both same-frequency (e.g., gamma-gamma) and cross-frequency (e.g., theta-gamma) couplings. These results suggest that the IOG and amygdala communicate rapidly with each other using various types of oscillations for the efficient processing of faces. (C) 2017 Wiley Periodicals, Inc.