共有されながらも分離可能な神経コード 視線,バレンンス,期待
Raviv Pryluk1, Yosef Shohat1, Anna Morozov1
1Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel.
Nature
|September 24, 2020
まとめ
霊長類の桃体では 目と感情のコードが重なり合っています 異なるメカニズムは 視線の結果と期待を処理し 社会的不安への洞察を提供します
科学分野:
- 神経科学
- 類人猿の行動
- 社会的認知
背景:
- 視線の方向性は霊長類における 重要な社会的シグナルであり コミュニケーションや感情的な反応に影響します
- 視線は脅威と不安をシグナルにすることができますが,その神経が刺激値 (価値) と重なり合っていることは完全に理解されていません.
- 視線は社会的遭遇の結果を予測します ポジティブかネガティブかですが その背後にある神経機構は不明です
研究 の 目的:
- 眼の視線処理と霊長類の刺激バレンスの間の神経の重複を調査する.
- 視線の結果と期待を処理する 異なる神経機構を特定する
- 社会的不安や関連障害を理解するための意味を探求する.
主な方法:
- 猿は人間の侵入者テストを 直接的または回避的な視線刺激で受けました
- 嫌悪感と食欲のパラダイムが 視線刺激と交わされたのです
- シングルニューロンの記録は桃体と前帯状皮質で行われました.
主要な成果:
- アミグダラのニューロンは 視線の方向をコードし 前帯状皮質のニューロンは 社会的な文脈をコードします
- アミグダラの共同ニューラル集団は,嫌悪感/食欲の刺激を反映した直接的/避けた視線への反応を示した.
- 視線/無条件刺激に対する全体的な活動と視線/有条件刺激に対する相関選択性という2つの異なる神経メカニズムが特定されました.
結論:
- 視線とバレンスの 神経コードは 霊長類の桃体で 大きく重なり合っています
- 異なる神経メカニズムが 視線の結果と期待の処理の 基礎となっています
- 社会的相互作用のニューラル基盤や ヴァレンスの計算や社会的不安について 洞察を得ました
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