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タイトル: | Temporal profile of amygdala gamma oscillations in response to faces. |
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 |
発行日: | Jun-2012 |
出版者: | MIT Press |
誌名: | Journal of cognitive neuroscience |
巻: | 24 |
号: | 6 |
開始ページ: | 1420 |
終了ページ: | 1433 |
抄録: | Neuroimaging studies have reported greater activation of the human amygdala in response to faces than to nonfacial stimuli, yet little is known about the temporal profile of this activation. We investigated this issue by recording the intracranial field potentials of the amygdala in participants undergoing preneurosurgical assessment (n = 6). Participants observed faces, mosaics, and houses in upright and inverted orientations using a dummy target detection task. Time-frequency statistical parametric mapping analyses revealed that the amygdala showed greater gamma-band activity in response to faces than to mosaics at 200-300 msec, with a peak at 255 msec. Gamma-band activation with a similar temporal profile was also found in response to faces versus houses. Activation patterns did not differ between upright and inverted presentations of stimuli. These results suggest that the human amygdala is involved in the early stages of face processing, including the modulation of subjective perception of faces. |
著作権等: | © 2012 Massachusetts Institute of Technology |
URI: | http://hdl.handle.net/2433/167501 |
DOI(出版社版): | 10.1162/jocn_a_00142 |
PubMed ID: | 21981674 |
出現コレクション: | 学術雑誌掲載論文等 |
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