Temporal profile of amygdala gamma oscillations in response to faces.

• 佐藤, 弥

• Kochiyama, Takanori

• Uono, Shota

• Matsuda, Kazumi

• Usui, Keiko

• Inoue, Yushi

• Toichi, Motomi

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.

収録刊行物

• Journal of cognitive neuroscience

  Journal of cognitive neuroscience 24 (6), 1420-1433, 2012-06

  MIT Press

詳細情報

• CRID: 1050845760686280704
• NII論文ID: 120005122136
• NII書誌ID: AA10671562
• ISSN: 0898929X
• HANDLE: 2433/167501
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles