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タイトル: | Rapid and multiple-stage activation of the human amygdala for processing facial signals. |
著者: | Sato, Wataru https://orcid.org/0000-0002-5335-1272 (unconfirmed) Kochiyama, Takanori Uono, Shota Matsuda, Kazumi Usui, Keiko Inoue, Yushi Toichi, Motomi |
著者名の別形: | 佐藤, 弥 |
キーワード: | amygdala emotional facial expression face gamma oscillation gaze intracranial electroencephalography (EEG) |
発行日: | Jul-2013 |
出版者: | Landes Bioscience |
誌名: | Communicative & integrative biology |
巻: | 6 |
号: | 4 |
論文番号: | e24562 |
抄録: | Human faces transmit multiple valuable signals, and neuroimaging studies have shown that the amygdala is active in response to facial stimuli. However, little has been known about the temporal profile of amygdala activation during facial signal processing until recently. Here we review three recent studies conducted by our group in which we recorded amygdala intracranial electroencephalography in humans. The subjects were engaged in tasks that required automatic processing of faces, eye gazes and emotional expressions. Time-frequency statistical parametric mapping analyses revealed that the amygdala showed gamma-band activation in response to emotional expressions, gazes and faces, with peak latencies at about 100 ms, 200 ms and 250 ms, respectively. These results suggest that: (1) the amygdala performs multiple-stage processing in response to these facial signals using different visual input routes, and (2) amygdala activation for processing all of these facial signals is rapid, which could be prior to or simultaneous with conscious awareness of faces. |
著作権等: | © 2013 Landes Bioscience This is an Open Access article licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. The article may redistributed, reproduced and reused for non-commercial purposes, provided the original source is properly cited. |
URI: | http://hdl.handle.net/2433/178658 |
DOI(出版社版): | 10.4161/cib.24562 |
PubMed ID: | 23986807 |
出現コレクション: | 学術雑誌掲載論文等 |
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