猿の頭皮質における作用の数値表現

Hiromasa Sawamura¹, Keisetsu Shima, Jun Tanji

¹Department of Physiology, Tohoku University School of Medicine, Sendai 980, Japan.

Nature

|February 23, 2002

まとめ

霊長類は霊長類である.

科学分野:

神経科学は神経科学である.
認知神経科学とは
霊長類の行動

背景:

前頭頂上結合領域は,体とオブジェクトの表現のための体感覚信号を統合します.
この領域は,感覚情報を使って動きを誘導します.

研究の目的:

数値ベースの行動タスク中に前頭上皮質が活発であるかどうかを調査する.
自己行動に関連する数値情報を処理する上頭頭葉の役割を決定する.

主な方法:

類人猿は,繰り返される動き (A,B,A) を含む周期的なタスクを実行した.
細胞活動は,上側頭葉,下側頭葉,および主体体感覚皮質で記録された.
神経活動が,運動の数とタイプに対する選択性について分析されました.

主要な成果:

上側頭葉の神経細胞は,自己運動の実行の数を反映した活動を示した.
この数値選択的活動は,実行された運動のタイプに大きく特異的であった.
類似した自己行動の数値表現は,下側頭葉ではあまり頻繁ではなく,主体体感覚皮質では稀であった.

結論:

上頭頭葉は,自己発起の行動に関連する数値情報を処理する上で重要な役割を果たします.
この処理は,今後のエンジン選択と計画に不可欠です.
この発見は,数学的認知と感覚運動制御における上側頭葉の特殊な役割を強調しています.

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