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Modeling the Functional Network for Spatial Navigation in the Human Brain
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軌道前頭皮質は 将来の航海目標の地図を作成します
Raunak Basu1, Robert Gebauer2, Tim Herfurth2
1Max Planck Institute for Brain Research, Frankfurt am Main, Germany. raunak.basu@brain.mgp.de.
Nature
|October 28, 2021
まとめ
ネズミの軌道前頭皮質 (OFC) のニューロンは 航海目標に一貫して指し示す 空間地図を作成します この脳の領域は 感覚知覚を超えた 精密なナビゲーションに不可欠です
科学分野:
- 神経科学
- 認知科学
- 行動科学
背景:
- 正確なナビゲーションは,継続的な空間的関係推定に依存しています.
- ナビゲーション中の目的地決定における海馬の神経細胞の役割は議論されている.
- 脳がアクティブな探索中に 標的の位置を正確に推定するかどうかは不明です
研究 の 目的:
- 精密な目標指向ナビゲーションの基礎にある神経機構を調査する.
- 未来の航海目的地を 特定する
- 空間ナビゲーションにおける軌道前皮質 (OFC) の機能を研究する.
主な方法:
- ネズミの軌道前皮質 (OFC) の神経活動を記録する.
- 目標表現に関連するニューラルアンサンブルダイナミクスを分析する.
- OFCの活動を妨害し,ナビゲーション行動への影響を観察する.
主要な成果:
- OFCニューロンが発見され 空間的表象が形成され 動物の目的地が示されます
- 観測された目的地コードは,ナビゲーションの開始前に,感覚目標へのアクセスなしで出現します.
- OFCの活動は 航海エラーが起こる前に 予測することがわかりました
- 航行開始時に OFC 活動を妨害すると,航行エラーが発生することが示されています.
結論:
- オービトフロントアル皮質 (OFC) は脳の内部のゴールマップに不可欠です
- OFCのニューラル・アンサンブルは,航行に不可欠な目的地特有の表現を維持します.
- OFCは,センサーの範囲外であっても,選択された目的地への正確なナビゲーションを可能にします.
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