追加の運動領域の細胞が,数回の移動を前もって計画する上で果たす役割

J Tanji¹, K Shima

¹Department of Physiology, Tohoku University School of Medicine, Sendai, Japan.

Nature

|September 29, 1994

まとめ

研究者らは,補足運動領域の脳細胞を発見し,その脳細胞は,動きのシーケンスを追跡する. これらの細胞は,目標を達成するために複数の動きを計画し,コード化するのに役立ちます.

科学分野:

神経科学は神経科学である.
モーター・コントロール・コントロール
認知神経科学とは

背景:

意志的な目標は,特定の時間的な順序で動作を実行することを要求します.
繰り返しのモーターシーケンスが記憶され,外部指導なしに実行されます.
オーダーされた運動情報を記憶する神経の基礎は不明である.

研究の目的:

オーダーされた運動シーケンスのための情報を保存する脳領域と細胞メカニズムを特定する.
多動のシーケンスの計画と実行における特定の皮質領域の役割を調査する.

主な方法:

電気生理学的記録は,運動タスクに訓練されたサルで行われました.
補足運動領域と一次運動皮質の細胞活動が分析されました.
神経活動と連続的な動きの実行の間の関係を調べました.

主要な成果:

補足運動領域の特定の細胞群は,命令された動きの配列にのみ関連した活動を示した.
この連続的な活動は,プライマリモーター皮質では観察されなかった.
この発見は,モーターシーケンスにおける補足運動領域の特殊な役割を示唆している.

結論:

補足運動領域の細胞は,今後の動きの順序について信号を寄与します.
この神経信号は,複数の動きを計画し,コード化するために不可欠です.
補足運動領域は,連続した行動のニューラル表現において重要な役割を果たします.

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