様々な視覚的なシーンで安定したヘッディング表現を生成する
Sung Soo Kim1,2,3, Ann M Hermundstad4, Sandro Romani4
1Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA. sungsoo@ucsb.edu.
Nature
|November 22, 2019
まとめ
ハエは神経の可塑性を用いて 視覚的な信号を 安定した航向表現に変換します このメカニズムは 部分的な環境情報から 完全な方向感覚を 作り出すことを可能にします
科学分野:
- 神経科学
- 動物 の 行動
- コンピュータ生物学
背景:
- 動物は感覚のヒントに 繋がった内部の方向表現を使って 航海します
- ハエでは,形体のコンパスニューロンが方向を表し,特性を選択するリングニューロンから入力を受けます.
研究 の 目的:
- ニューラル回路が 視覚信号を 安定したヘッディング表現にどのように 柔軟に変換するかを調べる
- 部分的な環境的指向から完全なヘッダの表現を可能にする神経の可塑性の役割を理解する.
主な方法:
- 2フォトンのカルシウムイメージングで 縛られたハエを撮影します
- オプトジェネティクスで 神経活動を操作する
- コンピュータによる回路モデリング
主要な成果:
- 視覚神経とコンパス神経の 関連した活動が 柔軟性を促進します
- この可塑性は,2Dの視覚的なヒントを安定したヘッダ表現に柔軟に変換することを可能にします.
- 柔軟性により,ハエは新しい環境での指向から完全なヘッディング表現を形成できます.
結論:
- 神経の可塑性は ハエの柔軟な視野から頭部への変換の 鍵となるメカニズムです
- このプロセスは,複雑な環境でのナビゲーションに不可欠なメモリ関連の計算の基礎です.
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