皮質と髄膜の間の前肢の運動段階の構造と機能の地図
Wuzhou Yang1, Harsh Kanodia1, Silvia Arber1
1Biozentrum, Department of Cell Biology, University of Basel, 4056 Basel, Switzerland; Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland.
Cell
|January 7, 2023
まとめ
この研究は前皮質 (AC) と髄膜の間の接続をマッピングし 特定の皮質領域が 前肢の動きを制御する方法を示しています この発見は,熟練した運動制御のための脳領域の相互作用を明らかにします.
科学分野:
- 神経科学
- モーター コントロール
- 皮質と脳幹の相互作用
背景:
- 脳皮質は様々な神経系の領域への投影を通して 動きを上から下へと制御します
- 脳幹の回路は前肢の 熟練した動きに不可欠ですが 皮質の相互作用は不明です
研究 の 目的:
- ネズミの前皮質 (AC) と髄膜の間の解剖学的および機能的な接続をマッピングする.
- 前肢の動きを制御する髄膜ニューロンとの皮質の相互作用の論理を解明する.
主な方法:
- 前皮質と側髄の間のシナプス柱の詳細な解剖図
- 特定の前肢への影響を評価するために静音化技術を用いた機能的特徴付け (到達,操作).
主要な成果:
- 異なる前頭皮質領域は,側髄の3Dシナプス柱を形成し,頂上的に髄膜ニューロンと並べられています.
- 中央AC (MAC) は,到達を制御する腹部ニューロンを標的とし,横向AC (LAC) は,食品を扱う背部のニューロンを標的とする.
- MACを静音化すると到達が妨げられ,LACを静音化すると食品の取り扱いが妨げられ,機能的特異性を示します.
結論:
- 前肢の制御のために前皮質と中枢の間には正確な地形と機能の地図が存在します.
- 特定の行動段階に合わせた 特定の皮質領域を 異なる髄膜ニューロン集団にマッピングします
- 皮質髄膜ニューロンは,他の皮質下構造と相互作用するために分離されたチャネルを使用します.
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