馴染みのある顔の認識のための2つの領域が霊長類の脳にあります
Sofia M Landi1, Winrich A Freiwald1
1The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA. slandi@rockefeller.edu wfreiwald@rockefeller.edu.
Science (New York, N.Y.)
|August 12, 2017
まとめ
馴染みのある顔は,見知らぬ顔より良く認識される. 側頭葉にある新しい脳領域は 馴染みのある顔の認識を助け 顔処理のネットワークを拡張します
科学分野:
- 神経科学
- 認知神経科学
- 霊長類の脳画像
背景:
- 馴染みのある顔の認識は 馴染みのない顔の認識より正確です 特に 難しい条件下でです
- 馴染みのある顔と馴染みのない顔を区別する 神経学的メカニズムは よく理解されていません
研究 の 目的:
- 馴染みのある顔と 馴染みのない顔の認識を 強化するための 神経的基盤を調査する
- 機能的磁気共鳴画像 (fMRI) を使用して熟悉した顔の処理に関与する脳の領域を特定する.
主な方法:
- 全脳機能性磁気共鳴画像 (fMRI) をマカクに用いた.
- この研究では 馴染みのある顔や物体を 見る時の脳活動パターンを比較しました
主要な成果:
- 馴染みのある顔は 馴染みのない顔よりも マカクの顔処理ネットワークを 活発に活性化させます
- 2つの新しい顔処理領域が 特定されました 周回頭皮質と極で 馴染みのある顔によって採用されました
- これらの新たに特定された領域は,未知の顔やオブジェクトに対するコアネットワークの線形反応とは異なり,ぼやけから生じる馴染みのある顔に対する非線形反応を示しました.
結論:
- 2つの異なる側頭葉領域が 馴染みのある顔認識の 特殊なシステムに寄与しています
- これらの領域は既知の顔処理ネットワークを拡張し,馴染みのある顔の精度を高めます.
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