中枢内皮質のグリッド細胞の地図のような微小組織
Yi Gu1, Sam Lewallen1, Amina A Kinkhabwala1
1Princeton Neuroscience Institute, Princeton University, Princeton, NJ 08544, USA; Bezos Center for Neural Circuit Dynamics, Princeton University, NJ 08544, USA.
Cell
|October 2, 2018
まとめ
脳内の認知変数の トポグラフィカルマップを発見しました 網状の細胞は 空間的な調整に合わせて 解剖学的クラスタリングを示し 位置に関する 神経コードを明らかにします
科学分野:
- 神経科学
- 認知科学
- システム神経科学
背景:
- 神経回路のトポグラフィーと機能の関係はほとんど不明です.
- トポグラフィカルマップは感覚/運動機能では一般的ですが,認知変数では稀です.
- 中枢内皮質のグリッド細胞は ナビゲーションの際に位置づけられる 認知コードを提供する.
研究 の 目的:
- 解剖学的組織とグリッド細胞の機能的特性との関係を調査する.
- 神経回路内の地形図に 認知変数が符号化されているかどうかを判断する
主な方法:
- 仮想ナビゲーションタスクでマウスのカルシウムイメージング技術を活用した.
- 格子細胞の解剖学的なクラスタリングと空間的なチューニングの性質を分析した.
- 腸内皮質のモジュール内の微生物を 調べました
主要な成果:
- マウスの中部内皮質で,有意なレベルのグリッド細胞微生物組織が観察されました.
- 格子細胞とモジュールは 解剖学的クラスタリングを示した.
- モジュール内のグリッド細胞の解剖学的な配置は 騒々しい二次元格子を形成しました
- 格子細胞の空間的分布は,それらの空間的チューニングフェーズと一致した.
結論:
- ネズミの認知変数 (位置) をコードする地形図の存在を証明した.
- グリッド・セル・ネットワークの回路モデルを評価するための基礎を提供します.
- 発見は,グリッド細胞形成のメカニズムとしての連続アトラクターモデルと一致しています.
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