ニューロン集団ベクトルのメンタル・ローテーション

A P Georgopoulos¹, J T Lurito, M Petrides

¹Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.

Science (New York, N.Y.)

|January 13, 1989

まとめ

研究者は,レサス猿が精神的に運動ベクトルを回転させる方法を研究した. 運動皮質のニューロン集団ベクトルは,時計回りに逆向きに回転し,腕の動き中に精神的な回転の直接的な証拠を提供しました.

科学分野:

神経科学は神経科学である.
コグニティブ・サイエンスコグニティブ・サイエンス
モーター・コントロール・コントロール

背景:

複雑な運動タスクのニューラル基盤を理解することは極めて重要です.
メンタル・ローテーションは,このようなタスクの基礎となっていると仮定される重要な認知プロセスです.

研究の目的:

運動制御におけるメンタル・ローテーションのニューラル・メカニズムを調査する.
想像された運動ベクトルが精神的に回転しているという仮説を検証するために.

主な方法:

ターゲットライトに相対して時計の方向に反して腕を動かすタスクを実行するためにレサス猿を訓練する.
タスクの実行中にモーター皮質のニューロンの活動を記録する.
時間の経過におけるニューロン集団ベクトルの計算.

主要な成果:

ニューロンの集団ベクトルは,反時計方向の漸進的な回転を示した.
この回転は,ターゲットライトの方向から動きの方向に起こりました.
平均回転速度は毎秒732度であった.

結論:

直接の神経的証拠は,運動制御のためのメンタル・ローテーション仮説を支持する.
ニューロン集団ベクトルは,認知操作の解読に役立つ貴重なツールです.
この研究は,脳がどのように動きを計画し,実行するかを理解することを強化します.

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