迅速 に 突入 する 内神経 は,効率 的 な 学習 の ため の 突破,カルシウム,可塑性 の 制御 を 提供 し て い ます
Scott F Owen1, Joshua D Berke2, Anatol C Kreitzer3
1Gladstone Institutes, San Francisco, CA 94158, USA.
Cell
|February 10, 2018
まとめ
速発性インターニューロン (FSI) は,中型棘状ニューロン (MSN) の破裂とカルシウム流入を調節することによって,神経ネットワークの活動を制御する. この調節は 配列学習と ストライアトムのシナプス可塑性にとって 極めて重要です
科学分野:
- 神経科学
- 細胞神経科学
- システム神経科学
背景:
- FSIは前脳の重要なGABAergic細胞で,ネットワークの増強制御と可塑性に関与します.
- 増強制御と可塑性におけるFSIの役割の相互作用は,まだ十分に理解されていません.
- FSIが中等脊椎投射ニューロン (MSN) にどのように影響するかを調査することは,線状神経機能を理解するために重要である.
研究 の 目的:
- ストライタルFSIがMSN活動とシナプス可塑性を制御する統一されたメカニズムを明らかにする.
- 運動シーケンス学習とストライタル依存戦略におけるFSIの役割を決定する.
主な方法:
- 細胞型特異的なFSIの消去
- 生体内光遺伝学と電気生理学
- カルシウム画像と行動分析のモーターシーケンスタスク
主要な成果:
- FSIの静音化は,MSNの破裂,カルシウムトランジエント,AMPA/NMDAの比率を増加させた.
- FSIサイレンシングはカルシウムトランジエントの頻度が増加したが,タスク・イベントの特異性は減少した.
- FSIの消去は ストライタムに依存する自己中心的な学習戦略の獲得を阻害しました
結論:
- ストレータルFSIは,MSNの破裂とカルシウム依存の可塑性を一時的に制限するためにフィードフォワード阻害を使用します.
- このFSIによる制御は,ストライタム依存の配列学習を促進するために不可欠です.
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