Rapid amygdala gamma oscillations in response to fearful facial expressions

被引：76

作者：

Sato, Wataru ^{[1
]}

Kochiyama, Takanori ^{[2
]}

Uono, Shota ^{[3
]}

Matsuda, Kazumi ^{[4
]}

Usui, Keiko ^{[4
]}

Inoue, Yushi ^{[4
]}

Toichi, Motomi ^{[5
]}

机构：

[1] Kyoto Univ, Hakubi Project, Primate Res Inst, Aichi 4848506, Japan

[2] Adv Telecommun Res Inst Int, Brain Act Imaging Ctr, Seika, Kyoto 6190288, Japan

[3] Kyoto Univ, Dept Cognit Psychol Educ, Sakyo Ku, Kyoto 6068501, Japan

[4] Shizuoka Inst Epilepsy & Neurol Disorders, Natl Epilepsy Ctr, Shizuoka 4208688, Japan

[5] Kyoto Univ, Grad Sch Med, Fac Human Hlth Sci, Sakyo Ku, Kyoto 6068507, Japan

来源：

NEUROPSYCHOLOGIA | 2011年 / 49卷 / 04期

关键词：

Amygdala; Emotional facial expression; Gamma oscillation; Intracranial field potential recording; EMOTIONAL FACES; BAND SYNCHRONIZATION; PREFRONTAL CORTEX; RANDOM-FIELD; HUMAN BRAIN; BOTTOM-UP; STIMULI; FMRI; EXPLICIT; AROUSAL;

D O I：

10.1016/j.neuropsychologia.2010.12.025

中图分类号：

B84 [心理学]; C [社会科学总论]; Q98 [人类学];

学科分类号：

03 ; 0303 ; 030303 ; 04 ; 0402 ;

摘要：

Neuroimaging studies have reported greater activation of the human amygdala in response to emotional facial expressions, especially for fear. However, little is known about how fast this activation occurs. We investigated this issue by recording the intracranial field potentials of the amygdala in subjects undergoing pre-neurosurgical assessment (n = 6). The subjects observed fearful, happy, and neutral facial expressions. Time-frequency statistical parametric mapping analyses revealed that the amygdala showed greater gamma-band activity in response to fearful compared with neutral facial expressions at 50-150 ms, with a peak at 135 ms. These results indicate that the human amygdala is able to rapidly process fearful facial expressions. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：612 / 617

页数：6

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