Rapid, high-frequency, and theta-coupled gamma oscillations in the inferior occipital gyrus during face processing.

• 佐藤, 弥

• Kochiyama, Takanori

• Uono, Shota

• Matsuda, Kazumi

• Usui, Keiko

• Inoue, Yushi

• Toichi, Motomi

抄録

Neuroimaging studies have found greater activation in the inferior occipital gyrus (IOG), or occipital face area, in response to faces relative to non-facial stimuli. However, the temporal, frequency, and functional profiles of IOG activity during face processing remain unclear. Here, this issue was investigated by recording intracranial field potentials in the IOG during the presentation of faces, mosaics, and houses in upright and inverted orientations. Time-frequency statistical parametric mapping analyses revealed greater gamma-band activation in the IOG beginning at 110msec and covering 40-300Hz in response to upright faces relative to upright houses and mosaics. Phase-amplitude cross-frequency coupling analyses revealed more evident theta-gamma couplings at 115-256msec during the processing of upright faces as compared with that of upright houses and mosaics. Comparable gamma-band activity was observed during the processing of inverted and upright faces at about 100-200msec, but weaker activity and different coupling with theta-band activity after 200msec. These patterns of activity were more evident in the right than in the left IOG. These results, together with other evidence on neural communication, suggest that broadband gamma oscillations in the right IOG conduct rapid and multistage (i.e., both featural and configural) face processing in collaboration with theta oscillations transmitted from other brain regions.

Special issue : What does human intracerebral recording tell us about emotions?

収録刊行物

• Cortex

  Cortex 60 52-68, 2014-11

  Elsevier Ltd.

キーワード

• Face
• Gamma oscillation
• Inferior occipital gyrus
• Intracranial field potential recording
• Phase–amplitude cross-frequency coupling

詳細情報

• CRID: 1050845760729873408
• NII論文ID: 120005522463
• NII書誌ID: AA00619737
• ISSN: 00109452
• HANDLE: 2433/192437
• 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