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顔のジェスチャーはダイナミックで安定したコードの皮質の階層によって実行されます

Geena R Ianni¹, Yuriria Vázquez¹, Adam G Rouse²

¹Laboratory of Neural Systems, The Rockefeller University, New York, NY, USA.

Science (New York, N.Y.)

|January 8, 2026

まとめ

霊長類はコミュニケーションのために顔のジェスチャーを使います脳の特定の領域によって制御されます新しい研究によるとこれらの領域は動きの前に独特のタイミングパターンを用いて意志表現と感情表現の両方を暗号化しています

科学分野:

神経科学
霊長類の行動
モーターコントロール

背景:

顔のジェスチャーは複雑な筋肉の動きを伴う霊長類のコミュニケーションに不可欠です
異なる皮質領域が,自発的な (側頭前頭) と感情的な (中頭) 顔の表情に関与しています.

研究の目的:

横側および中部皮質の顔運動領域が意志的および感情的な顔のジェスチャーをどのようにコードするかを調査する.
これらの領域における神経活動の時間的ダイナミクスを理解する

主な方法:

シングルニューロンの直接記録は側頭葉と中頭葉の顔の運動領域から
顔のジェスチャーを実行する前と中の神経活動パターンの分析.

主要な成果:

側頭部と中頭部の両方の皮質領域は意図的な顔のジェスチャーと感情的な顔のジェスチャーをコードします
特定の領域に特有の時間的な活動パターンは動きが始まる前にジェスチャーコードを区別します
ダイナミックから一時的に安定するジェスチャー・コーディングの連続は下流の皮質のプロジェクションに存在します

結論:

皮質の顔の運動領域はコミュニケーションジェスチャーの複雑で時間的にダイナミックなエンコーディングを示しています
パラレル処理ストリームは,社会的に適切な顔のモーター出力を生み出すのに貢献します.

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