脱出時に避難場所へ向かい合うためのコーティコ・コリキュラー回路
Dario Campagner1,2, Ruben Vale1,3, Yu Lin Tan1
1UCL Sainsbury Wellcome Centre for Neural Circuits and Behaviour, London, UK.
Nature
|December 21, 2022
まとめ
ネズミは捕食者からの脱出時に 背皮質 (RSP) と上皮質 (SC) の回路を使って 避難所に向かいます この経路は 避難場所の方向をコードし 安全な場所へ 効率的かつ迅速な飛行を保証します
科学分野:
- 神経科学
- 動物 の 行動
- スペースナビ
背景:
- 動物は本能的に 脅威に直面すると 避難所へ逃げます 環境の空間的知識を利用します
- 脱出を開始する神経メカニズムは知られていますが 空間情報が効率的な脱出路をどのように導くかは不明です
研究 の 目的:
- 神経回路を調査する 避難所からの脱出を指示する
- 逃亡路の空間情報に 関わる特定の脳領域を特定する
主な方法:
- ネズミの逆皮質 (RSP) と上皮質 (SC) の回路を研究した.
- RSP-SC経路の役割を評価するために神経記録と不活性化実験を使用しました.
- 電路の機能をシミュレートするために 生物学的制約のスパイクネットワークモデルを開発した.
主要な成果:
- RSP-SC回路は 避難方向ベクトルを エゴ中心の座標で暗号化しています 脱出時の正確な指向に不可欠です
- RSPのアクティビティはSCのシェルター・ディレクション・チューニングに影響を及ぼし,無効化により,脱出ルートが非効率化される.
- RSP-SC経路内のフィードフォワード横向阻害マイクロ回路は,広範で鋭い方向のエンコーディングのためのニューラルチューニングを形作ります.
結論:
- RSP-SC回路は,脱出時に迅速なナビゲーションのための空間的目標表現を生成するために特化されています.
- この回路は,空間情報へのモーターアクセスを提供することで,効率的で目標指向の動きを可能にします.
- 重要な目標に向かって 迅速かつ適応的なナビゲーションの ニューラル基盤についての洞察を 提供しています
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